What's new arround internet
| Src | Date (GMT) | Titre | Description | Tags | Stories | Notes |
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2024-04-15 15:15:00 | Faits saillants hebdomadaires, 15 avril 2024 Weekly OSINT Highlights, 15 April 2024 (lien direct) |
## Snapshot Last week\'s OSINT reporting reveals a landscape of diverse cyber threats characterized by sophisticated attack tactics and adaptable threat actors. One key trend was the increasing use of artificial intelligence (AI) by cybercriminals, including AI-powered malvertising on social media platforms and suspected LLM-generated content in a malware campaign targeting German organizations. Additionally, several OSINT articles reported on the trend of exploiting popular platforms like YouTube and GitHub to distribute malware. Threat actors demonstrate a keen understanding of user behavior, leveraging enticing content and fake webpages to lure victims into downloading malicious payloads, highlighting the importance of proactive defense strategies to mitigate evolving threats effectively. ## Description 1. **[German Organizations Targeted with Rhadamanthys Malware](https://security.microsoft.com/intel-explorer/articles/119bde85):** Proofpoint identifies TA547 launching an email campaign targeting German organizations with Rhadamanthys malware, representing a shift in techniques for the threat actor. The campaign involves impersonating a German retail company in emails containing password-protected ZIP files containing LNK files triggering PowerShell scripts to load Rhadamanthys into memory, bypassing disk writing. The incorporation of suspected LLM-generated content into the attack chain provides insight into how threat actors are leveraging LLM-generated content in malware campaigns. 2. **[Russian-Language Cybercrime Operation Leveraging Fake Web3 Gaming Projects](https://security.microsoft.com/intel-explorer/articles/0cdc08b5):** The Insikt Group uncovers a large-scale Russian-language cybercrime operation distributing infostealer malware through fake Web3 gaming projects targeting both macOS and Windows users. Threat actors entice users with the potential for cryptocurrency earnings, distributing malware like Atomic macOS Stealer (AMOS), Stealc, Rhadamanthys, or RisePro upon visiting imitation Web3 gaming projects\' webpages. 3. **[AI-Powered Malvertising Campaigns on Social Media](https://security.microsoft.com/intel-explorer/articles/1e1b0868):** Bitdefender discusses the use of artificial intelligence (AI) by cybercriminals in malvertising campaigns on social media platforms, impersonating popular AI software to distribute stealers like Rilide, Vidar, IceRAT, and Nova Stealer. These campaigns target European users through fake AI software webpages on Facebook, organized by taking over existing accounts and boosting page popularity through engaging content. 4. **[Exploitation of YouTube Channels for Infostealer Distribution](https://security.microsoft.com/intel-explorer/articles/e9f5e219):** AhnLab identifies a trend where threat actors exploit YouTube channels to distribute Infostealers like Vidar and LummaC2, disguising them as cracked versions of legitimate software. Attackers hijack popular channels with hundreds of thousands of subscribers, distributing malicious links through video descriptions and comments, highlighting concerns about the potential reach and impact of distributed malware. 5. **[VenomRAT Distribution via Phishing Email with Malicious SVG Files](https://security.microsoft.com/intel-explorer/articles/98d69c76):** FortiGuard Labs reveals a threat actor distributing VenomRAT and other plugins through phishing emails containing malicious Scalable Vector Graphics (SVG) files. The email attachment downloads a ZIP file containing an obfuscated Batch file, subsequently loading VenomRAT using ScrubCrypt to maintain a connection with a command and control (C2) server and install plugins on victims\' environments. 6. **[Malware Distribution through GitHub Repositories Manipulation](https://security.microsoft.com/intel-explorer/articles/4d0ffb2c):** Checkmarx reports a cybercriminal attack campaign manipulating GitHub\'s search functionality to distribute malware through repositories. Attackers create repositories with popular names and topics, hiding malicious code withi | Ransomware Spam Malware Tool Threat Prediction | ★★ | |
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2024-04-09 19:48:57 | Threat Actors Hack YouTube Channels to Distribute Infostealers (Vidar and LummaC2) (lien direct) | ## Instantané
L'AHNLAB Security Intelligence Center (ASEC) a identifié une tendance préoccupante où les acteurs de menace exploitent les canaux YouTube pour distribuer des infostelleurs, en particulier Vidar et Lummac2.
## Description
Plutôt que de créer de nouveaux canaux, les attaquants détournent des canaux populaires existants avec des centaines de milliers d'abonnés.Le malware est déguisé en versions fissurées de logiciels légitimes, et les attaquants utilisent des descriptions et des commentaires vidéo de YouTube \\ pour distribuer les liens malveillants.Le malware Vidar, par exemple, est déguisé en installateur de logiciel Adobe, et il communique avec son serveur de commande et de contrôle (C & C) via Telegram et Steam Community.De même, Lummac2 est distribué sous le couvert de logiciels commerciaux fissurés et est conçu pour voler des informations d'identification de compte et des fichiers de portefeuille de crypto-monnaie.
La méthode des acteurs de menace \\ 'd'infiltration de canaux YouTube bien connus avec une grande base d'abonnés soulève des préoccupations concernant la portée et l'impact potentiels du malware distribué.Le malware déguisé est souvent compressé avec une protection par mot de passe pour échapper à la détection par des solutions de sécurité.Il est crucial pour les utilisateurs de faire preuve de prudence lors du téléchargement de logiciels à partir de sources non officielles et de s'assurer que leur logiciel de sécurité est à la hauteurdate pour prévenir les infections de logiciels malveillants.
## Les références
[https://asec.ahnlab.com/en/63980/
## Snapshot The AhnLab Security Intelligence Center (ASEC) has identified a concerning trend where threat actors are exploiting YouTube channels to distribute Infostealers, specifically Vidar and LummaC2. ## Description Rather than creating new channels, the attackers are hijacking existing, popular channels with hundreds of thousands of subscribers. The malware is disguised as cracked versions of legitimate software, and the attackers use YouTube\'s video descriptions and comments to distribute the malicious links. The Vidar malware, for example, is disguised as an installer for Adobe software, and it communicates with its command and control (C&C) server via Telegram and Steam Community. Similarly, LummaC2 is distributed under the guise of cracked commercial software and is designed to steal account credentials and cryptocurrency wallet files. The threat actors\' method of infiltrating well-known YouTube channels with a large subscriber base raises concerns about the potential reach and impact of the distributed malware. The disguised malware is often compressed with password protection to evade detection by security solutions. It is crucial for users to exercise caution when downloading software from unofficial sources and to ensure that their security software is up to date to prevent malware infections. ## References [https://asec.ahnlab.com/en/63980/](https://asec.ahnlab.com/en/63980/) |
Malware Hack Threat Prediction Commercial | ★★★ | |
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2024-04-05 13:39:39 | Même cibles, nouveaux manuels: les acteurs de la menace en Asie de l'Est utilisent des méthodes uniques Same targets, new playbooks: East Asia threat actors employ unique methods (lien direct) |
## Snapshot Microsoft has observed several notable cyber and influence trends from China and North Korea since June 2023 that demonstrate not only doubling down on familiar targets, but also attempts to use more sophisticated influence techniques to achieve their goals. Chinese cyber actors broadly selected three target areas over the last seven months. - One set of Chinese actors extensively targeted entities across the South Pacific Islands. - A second set of Chinese activity continued a streak of cyberattacks against regional adversaries in the South China Sea region. - Meanwhile, a third set of Chinese actors compromised the US defense industrial base. Chinese influence actors-rather than broadening the geographic scope of their targets-honed their techniques and experimented with new media. Chinese influence campaigns continued to refine AI-generated or AI-enhanced content. The influence actors behind these campaigns have shown a willingness to **both amplify AI-generated media that benefits their strategic narratives, as well as create their own video, memes, and audio content**. Such tactics have been used in campaigns stoking divisions within the United States and exacerbating rifts in the Asia-Pacific region-including Taiwan, Japan, and South Korea. These campaigns achieved varying levels of resonance with no singular formula producing consistent audience engagement. North Korean cyber actors made headlines for **increasing software supply chain attacks and cryptocurrency heists over the past year**. While strategic spear-phishing campaigns targeting researchers who study the Korean Peninsula remained a constant trend, North Korean threat actors appeared to make greater use of legitimate software to compromise even more victims. ## Activity Overview ### Chinese cyber operations target strategic partners and competitors #### Gingham Typhoon targets government, IT, and multinational entities across the South Pacific Islands **** *Figure 1: Observed events from Gingham Typhoon from June 2023 to January 2024 highlights their continued focus on South Pacific Island nations. However, much of this targeting has been ongoing, reflecting a yearslong focus on the region. Geographic locations and diameter of symbology are representational. * During the summer of 2023, Microsoft Threat Intelligence observed extensive activity from China-based espionage group Gingham Typhoon that targeted nearly every South Pacific Island country. Gingham Typhoon is the most active actor in this region, hitting international organizations, government entities, and the IT sector with complex phishing campaigns. Victims also included vocal critics of the Chinese government. Diplomatic allies of China who were victims of recent Gingham Typhoon activity include executive offices in government, trade-related departments, internet service providers, as well as a transportation entity. Heightened geopolitical and diplomatic competition in the region may be motivations for these offensive cyber activities. China pursues strategic partnerships with South Pacific Island nations to expand economic ties and broker diplomatic and security agreements. Chinese cyber espionage in this region also follows economic partners. For example, Chinese actors engaged in large-scale targeting of multinational organizations in Papua New Guinea, a longtime diplomatic partner that is benefiting from multiple Belt and Road Initiative (BRI) projects including the construction of a major highway which links a Papua New Guinea government building to the capital city\'s main road. (1) #### Chinese threat actors retain focus on South China Sea amid Western military exercises China-based threat actors continued to target entities related to China\'s economic and military interests in a | Malware Tool Vulnerability Threat Studies Industrial Prediction Technical | Guam | ★★★ |
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2024-04-03 20:46:53 | Earth Freybug Uses UNAPIMON for Unhooking Critical APIs (lien direct) | #### Description
Trend Micro a analysé une attaque de cyberespionnage que la société a attribuée à Earth Freybug, un sous-ensemble d'APT41 (suivi par Microsoft comme [typhon en laiton] (https: // sip.security.microsoft.com/intel-profiles/f0aaa62bfbaf3739bb92106688e6a00fc05afc0d4158b0e389b4078112d37c6?)).Selon Trend Micro, Earth Freybug est actif depuis àAu moins 2012 et le groupe lié au chinois a été actif dans l'espionnage et les attaques financièrement motivées.Earth Freybug utilise divers outils tels que Lolbins et les logiciels malveillants personnalisés, ciblant les organisations à l'échelle mondiale.L'attaque a utilisé des techniques telles que Dynamic Link Library (DLL) détournement et décrocheur API pour éviter la surveillance d'un nouveau malware appelé Unapimon.Unapimon élude la détection en empêchant les processus enfants d'être surveillés.
Le flux d'attaque a consisté à créer des tâches planifiées à distance et à exécuter des commandes de reconnaissance pour recueillir des informations système.Par la suite, une porte dérobée a été lancée à l'aide d'un chargement latéral DLL via un service appelé sessionnv, qui charge une DLL malveillante.Unapimon, la DLL injectée, utilise le crochet de l'API pour échapper à la surveillance et à l'exécution de commandes malveillantes non détectées, présentant les attaquants \\ 'sophistication.
[Consultez la rédaction de Microsoft \\ sur Dynamic-Link Library (DLL) Rijacking ici.] (Https://sip.security.microsoft.com/intel-explorer/articles/91be20e8?)
#### URL de référence (s)
1. https://www.trendmicro.com/en_us/research/24/d/arth-freybug.html
#### Date de publication
2 avril 2024
#### Auteurs)
Christopher So
#### Description Trend Micro analyzed a cyberespionage attack the company has attributed to Earth Freybug, a subset of APT41 (tracked by Microsoft as [Brass Typhoon](https://sip.security.microsoft.com/intel-profiles/f0aaa62bfbaf3739bb92106688e6a00fc05eafc0d4158b0e389b4078112d37c6?)). According to Trend Micro, Earth Freybug has been active since at least 2012 and the Chinese-linked group has been active in espionage and financially motivated attacks. Earth Freybug employs diverse tools like LOLBins and custom malware, targeting organizations globally. The attack used techniques like dynamic link library (DLL) hijacking and API unhooking to avoid monitoring for a new malware called UNAPIMON. UNAPIMON evades detection by preventing child processes from being monitored. The attack flow involved creating remote scheduled tasks and executing reconnaissance commands to gather system information. Subsequently, a backdoor was launched using DLL side-loading via a service called SessionEnv, which loads a malicious DLL. UNAPIMON, the injected DLL, uses API hooking to evade monitoring and execute malicious commands undetected, showcasing the attackers\' sophistication. [Check out Microsoft\'s write-up on dynamic-link library (DLL) hijacking here.](https://sip.security.microsoft.com/intel-explorer/articles/91be20e8?) #### Reference URL(s) 1. https://www.trendmicro.com/en_us/research/24/d/earth-freybug.html #### Publication Date April 2, 2024 #### Author(s) Christopher So |
Malware Tool Prediction | APT 41 | ★★ |
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2024-03-18 13:23:03 | Faits saillants hebdomadaires OSINT, 18 mars 2024 Weekly OSINT Highlights, 18 March 2024 (lien direct) |
## Weekly OSINT Highlights, 18 March 2024 Last week\'s OSINT reporting revealed a common theme: cyberattacks targeting specific user groups are becoming more sophisticated. Take, for instance, the Notion installer malware, which dupes users by posing as a legitimate software installer, showcasing adept social engineering. Similarly, the BIPClip campaign demonstrates a highly targeted approach towards developers involved in cryptocurrency projects, with the threat actors leveraging multiple open-source packages to steal sensitive mnemonic phrases. Despite distinct attack methods, both instances underscore threat actors\' adaptability in tailoring attacks to their targets. Additionally, the analysis highlights a growing trend where attackers focus on specific sectors or user demographics, indicating a shift towards more targeted and stealthy cyber threats rather than indiscriminate attacks. This trend underscores the importance of user vigilance and the necessity for industry-specific cybersecurity measures to mitigate evolving risks. 1. **[Notion Installer Malware](https://security.microsoft.com/intel-explorer/articles/f21ac4ec?):** A new MSIX malware posing as the Notion installer is distributed through a fake website resembling the official Notion homepage. The malware, signed with a valid certificate, infects Windows PCs when users attempt to install Notion, compromising their systems with malware. 2. **[BIPClip Crypto Wallet Theft Campaign](https://security.microsoft.com/intel-explorer/articles/21aa5484?):** ReversingLabs uncovered the BIPClip campaign, which utilizes seven open-source packages across 19 versions from PyPI to steal mnemonic phrases for crypto wallet recovery. The campaign targets developers involved in cryptocurrency wallet projects, particularly those implementing Bitcoin Improvement Proposal 39 (BIP39), and employs sophisticated methods to avoid detection. The BIPClip campaign underscores how crypto assets are one of the most popular targets of cybercriminal groups and other threat actors, such as North Korean APTs. ## Learn More For the latest security research from the Microsoft Threat Intelligence community, check out the Microsoft Threat Intelligence Blog: [https://aka.ms/threatintelblog](https://aka.ms/threatintelblog). Microsoft customers can use the following reports in Microsoft Defender Threat Intelligence to get the most up-to-date information about the threat actor, malicious activity, and techniques discussed in this summary. The following reports provide the intelligence, protection information, and recommended actions to prevent, mitigate, or respond to associated threats found in customer environments: - Tool Profile: [Information stealers](https://sip.security.microsoft.com/intel-profiles/2296d491ea381b532b24f2575f9418d4b6723c17b8a1f507d20c2140a75d16d6?) - [Financially motivated threat actors misusing App Installer](https://security.microsoft.com/intel-explorer/articles/74368091?) ## Recommendations to protect against Information stealers Microsoft recommends the following mitigations to reduce the impact of Information stealer threats. - Check your Office 365 email filtering settings to ensure you block spoofed emails, spam, and emails with malware. Use [Microsoft Defender for Office 365](https://learn.microsoft.com/microsoft-365/security/office-365-security/defender-for-office-365?ocid=magicti_ta_learndoc) for enhanced phishing protection and coverage against new threats and polymorphic variants. Configure Microsoft Defender for Office 365 to [recheck links on click](https://learn.microsoft.com/microsoft-365/security/office-365-security/safe-links-about?ocid=magicti_ta_learndoc) and [delete sent mail](https://learn.microsoft.com/microsoft-365/security/office-365-security/zero-hour-auto-purge?ocid=magicti_ta_learndoc) in response to newly acquired threat intelligence. Turn on [safe attachments policies](https://learn.microsoft.com/microsoft-365/security/office-365-sec | Ransomware Spam Malware Tool Threat Prediction | ★★★ | |
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2024-03-11 13:43:18 | Faits saillants hebdomadaires OSINT, 11 mars 2024 Weekly OSINT Highlights, 11 March 2024 (lien direct) |
## Weekly OSINT Highlights, 11 March 2024 The OSINT reporting last week underscores several prevalent trends in cyber threats. Firstly, ransomware continues to be a significant threat, with groups like GhostSec conducting double extortion attacks and offering RaaS programs, while threat actors like SocGholish exploit vulnerabilities in web platforms like WordPress. Additionally, phishing remains a persistent tactic, exemplified by the discovery of the CryptoChameleon kit targeting cryptocurrency platforms and governmental agencies. Furthermore, attackers are targeting misconfigured servers and leveraging 1-day vulnerabilities to conduct various malicious activities, from cryptocurrency mining to unauthorized data collection. These trends emphasize the evolving tactics and motivations of cyber threat actors, highlighting the need for robust cybersecurity measures and vigilance across various sectors and platforms. 1. **[SocGholish Malware Targeting WordPress](https://security.microsoft.com/intel-explorer/articles/0218512b?)**: WordPress websites are targeted by SocGholish malware, initiating with a JavaScript malware framework and leading to potential ransomware infections, often through compromised administrator accounts. 2. **[GhostSec Ransomware Activities Surge](https://security.microsoft.com/intel-explorer/articles/ee5a4e56?)**: GhostSec, a financially motivated hacking group, collaborates with Stormous ransomware in double extortion attacks across various business verticals, offering a ransomware-as-a-service (RaaS) program, with a surge in activities observed recently. 3. **[CryptoChameleon Phishing Kit](https://security.microsoft.com/intel-explorer/articles/9227be0c?)**: Lookout uncovers the CryptoChameleon phishing kit, adept at stealing sensitive data from cryptocurrency platforms and the FCC, utilizing custom single sign-on (SSO) pages and SMS lures, primarily targeting victims in the United States. Notably, the kit includes an administrative console to monitor phishing attempts and offers customized redirections based on victims\' responses, with an emphasis on mimicking authentic MFA processes. 4. **[Malware Campaign Targeting Misconfigured Servers](https://security.microsoft.com/intel-explorer/articles/68797fe5?)**: Cado Security Labs discovers a malware campaign targeting misconfigured servers, leveraging unique payloads and exploiting n-day vulnerabilities for Remote Code Execution (RCE) attacks and cryptocurrency mining. 5. **[Earth Kapre Espionage Group](https://security.microsoft.com/intel-explorer/articles/d2d46a48?)**: Trend Micro exposes the Earth Kapre espionage group, conducting phishing campaigns across multiple countries, with malicious attachments leading to unauthorized data collection and transmission to command-and-control (C&C) servers. 6. **[Magnet Goblin Exploiting 1-Day Vulnerabilities](https://security.microsoft.com/intel-explorer/articles/11616c16?)**: Check Point identifies Magnet Goblin\'s financially motivated attacks, rapidly adopting 1-day vulnerabilities, particularly targeting Ivanti Connect Secure VPN, with a diverse arsenal including a Linux version of NerbianRAT and JavaScript credential stealers. ## Learn More For the latest security research from the Microsoft Threat Intelligence community, check out the Microsoft Threat Intelligence Blog: [https://aka.ms/threatintelblog](https://aka.ms/threatintelblog) and the following blog posts: - [Ransomware as a service: Understanding the cybercrime gig economy and how to protect yourself](https://www.microsoft.com/en-us/security/blog/2022/05/09/ransomware-as-a-service-understanding-the-cybercrime-gig-economy-and-how-to-protect-yourself/?ocid=magicti_ta_blog#defending-against-ransomware) - [Cryptojacking: Understanding and defending against cloud compute resource abuse](https://www.microsoft.com/en-us/security/blog/2023/07/25/cryptojacking-understanding-and-defending-against-cloud-compute-resource-abuse/) Microsoft customers can use the following reports in Mi | Ransomware Malware Tool Vulnerability Threat Prediction Cloud | ★★★ | |
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2024-02-15 18:48:58 | Bumblebee bourdonne en noir |Point de preuve nous Bumblebee Buzzes Back in Black | Proofpoint US (lien direct) |
#### Description
Les chercheurs de Proofpoint ont découvert le retour du malware de Bumblebee le 8 février 2024, marquant sa réapparition après quatre mois d'absence de leurs données de menace.
Bumblebee, un téléchargeur sophistiqué utilisé par divers groupes de cybercrimins, a refait surface dans une campagne ciblant les organisations américaines via des e-mails avec des URL OneDrive contenant des fichiers Word se présentant comme des messages vocaux de "info @ Quarlesaa [.] Com".Ces documents de mots, l'identité de la société d'électronique Humane, ont utilisé des macros pour exécuter des scripts et télécharger des charges utiles malveillantes à partir de serveurs distants.La chaîne d'attaque, utilisant notamment des documents macro-compatibles VBA, contraste avec les tendances récentes des cyber-menaces, où ces macros étaient moins couramment utilisées.Malgré l'absence d'attribution à un acteur de menace spécifique, Proofpoint prévient le potentiel de Bumblebee en tant que point d'accès initial pour les attaques de ransomware ultérieures.La résurgence de Bumblebee s'aligne sur une tendance plus large de l'augmentation de l'activité cybercriminale observée en 2024, marquée par le retour de plusieurs acteurs de menace et des souches de logiciels malveillants après des périodes de dormance prolongées, indiquant une augmentation des cybermenaces après une baisse temporaire.
#### URL de référence (s)
1. https://www.proalpoint.com/us/blog/thereat-insight/bumblebee-buzzes-back-black
#### Date de publication
12 février 2024
#### Auteurs)
Axel f
Selena Larson
Équipe de recherche sur les menaces de preuve
#### Description Proofpoint researchers discovered the return of the Bumblebee malware on February 8, 2024, marking its reappearance after four months of absence from their threat data. Bumblebee, a sophisticated downloader utilized by various cybercriminal groups, resurfaced in a campaign targeting US organizations through emails with OneDrive URLs containing Word files posing as voicemail messages from "info@quarlesaa[.]com". These Word documents, impersonating the electronics company Humane, utilized macros to execute scripts and download malicious payloads from remote servers. The attack chain, notably employing VBA macro-enabled documents, contrasts with recent trends in cyber threats, where such macros were less commonly used. Despite the absence of attribution to a specific threat actor, Proofpoint warns of Bumblebee\'s potential as an initial access point for subsequent ransomware attacks. The resurgence of Bumblebee aligns with a broader trend of increased cybercriminal activity observed in 2024, marked by the return of several threat actors and malware strains after prolonged periods of dormancy, indicating a surge in cyber threats following a temporary decline. #### Reference URL(s) 1. https://www.proofpoint.com/us/blog/threat-insight/bumblebee-buzzes-back-black #### Publication Date February 12, 2024 #### Author(s) Axel F Selena Larson Proofpoint Threat Research Team |
Ransomware Malware Threat Prediction | ★★ | |
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2024-01-25 20:18:28 | Kasseika Ransomware déploie BYOVD ATTAQUES ABUS Psexec et exploite le pilote Martini Kasseika Ransomware Deploys BYOVD Attacks Abuses PsExec and Exploits Martini Driver (lien direct) |
#### Description
L'opération de ransomware nommée \\ 'Kasseika \' a adopté Bring vos propres tactiques de pilote vulnérable (BYOVD) pour désactiver le logiciel antivirus avant de crypter des fichiers.
Kasseika exploite le pilote Martini, qui fait partie du système d'agent Virtt Soft \\ de TG Soft, pour désactiver les produits antivirus protégeant le système ciblé.Trend Micro a découvert Kasseika en décembre 2023, notant ses similitudes avec Blackmatter, suggérant qu'il pourrait avoir été construit par d'anciens membres ou acteurs qui ont acheté le code de Blackmatter \\.L'attaque commence par un e-mail de phishing, volant des informations d'identification pour l'accès initial, suivie de l'outil d'abus de Psexec Windows pour le mouvement latéral.Kasseika utilise des attaques BYOVD pour gagner des privilèges, résilier les processus antivirus et exécuter son ransomware binaire, exigeant une rançon de Bitcoin et offrant aux victimes une option de décryptage dans les 120 heures.
#### URL de référence (s)
1. https://www.trendmicro.com/en_us/research/24/a/kasseika-ransomware-deploys-byovd-attades-abuses-psexec-and-expl.html
#### Date de publication
25 janvier 2024
#### Auteurs)
Chercheurs Trendmicro
#### Description The ransomware operation named \'Kasseika\' has adopted Bring Your Own Vulnerable Driver (BYOVD) tactics to disable antivirus software before encrypting files. Kasseika exploits the Martini driver, part of TG Soft\'s VirtIT Agent System, to disable antivirus products protecting the targeted system. Trend Micro discovered Kasseika in December 2023, noting its similarities with BlackMatter, suggesting it may have been built by former members or actors who purchased BlackMatter\'s code. The attack begins with a phishing email, stealing credentials for initial access, followed by the abuse of Windows PsExec tool for lateral movement. Kasseika utilizes BYOVD attacks to gain privileges, terminate antivirus processes, and execute its ransomware binary, demanding a Bitcoin ransom and providing victims with a decryption option within 120 hours. #### Reference URL(s) 1. https://www.trendmicro.com/en_us/research/24/a/kasseika-ransomware-deploys-byovd-attacks-abuses-psexec-and-expl.html #### Publication Date January 25, 2024 #### Author(s) TrendMicro Researchers |
Ransomware Tool Prediction | ★★★ | |
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2023-12-28 19:18:50 | Trend Analysis on Kimsuky Group\'s Attacks Using AppleSeed (lien direct) | #### Description
Le groupe de menaces Kimsuky, connu pour être soutenu par la Corée du Nord, est actif depuis 2013. Le groupe lance généralement des attaques de phishing de lance contre la défense nationale, les industries de la défense, les médias, la diplomatie, les organisations nationales et les secteurs académiques.
Leurs attaques visent à voler des informations internes et des technologies auprès des organisations.Alors que le groupe Kimsuky utilise généralement des attaques de phishing de lance pour un accès initial, la plupart de leurs attaques récentes impliquent l'utilisation de logiciels malveillants de type raccourci au format de fichier LNK.Bien que les logiciels malveillants LNK constituent une grande partie des attaques récentes, des cas utilisant des javascripts ou des documents malveillants continuent d'être détectés.Ces cas d'attaque qui utilisent des logiciels malveillants de type JavaScript impliquent généralement la distribution d'applications.En plus de JavaScript, des logiciels malwares de macro Excel sont également utilisés pour installer Appleseed.Appleseed est une porte dérobée qui peut recevoir les commandes de la menace acteur \\ du serveur C&C et exécuter les commandes reçues.L'acteur de menace peut utiliser Appleseed pour contrôler le système infecté.Il propose également des fonctionnalités telles qu'un téléchargeur qui installe des logiciels malveillants supplémentaires, Keylogging et prenant des captures d'écran, et en volant des informations en collectant des fichiers dans le système utilisateur et en les envoyant.Alphaseed est un logiciel malveillant développé dans Golang et prend en charge des fonctionnalités similaires à Appleseed telles que l'exécution des commandes et l'infostoritration.
#### URL de référence (s)
1. https://asec.ahnlab.com/en/60054/
#### Date de publication
27 décembre 2023
#### Auteurs)
Sanseo
#### Description The Kimsuky threat group, known to be supported by North Korea, has been active since 2013. The group usually launches spear phishing attacks against national defense, defense industries, media, diplomacy, national organizations, and academic sectors. Their attacks aim to steal internal information and technology from organizations. While the Kimsuky group typically uses spear phishing attacks for initial access, most of their recent attacks involve the use of shortcut-type malware in LNK file format. Although LNK malware comprise a large part of recent attacks, cases using JavaScripts or malicious documents are continuing to be detected. Such attack cases that use JavaScript-type malware usually involve the distribution of AppleSeed. In addition to JavaScript, Excel macro malware are also used to install AppleSeed. AppleSeed is a backdoor that can receive the threat actor\'s commands from the C&C server and execute the received commands. The threat actor can use AppleSeed to control the infected system. It also offers features such as a downloader that installs additional malware, keylogging and taking screenshots, and stealing information by collecting files from the user system and sending them. AlphaSeed is a malware developed in Golang and supports similar features to AppleSeed such as command execution and infostealing. #### Reference URL(s) 1. https://asec.ahnlab.com/en/60054/ #### Publication Date December 27, 2023 #### Author(s) Sanseo |
Malware Threat Prediction | APT 43 | ★★★ |
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2023-11-28 21:56:39 | Spotlight des ransomwares: Trigona Ransomware Spotlight: Trigona (lien direct) |
#### Description
Le ransomware de Trigona, suivi pour la première fois par Trend Micro sous le nom d'eau, a émergé en octobre 2022, mais les binaires du ransomware ont été perçus dès juin de la même année.Le groupe s'est positionné comme gérant un schéma lucratif, lançant des attaques mondiales et des revenus publicitaires jusqu'à 20% à 50% pour chaque attaque réussie.)) Chats internes de Forum \\ et à l'aide des informations d'origine pour obtenir un accès initial aux cibles.
En avril 2023, Trigona a commencé à cibler les serveurs compromis Microsoft SQL (MSSQL) via des attaques par force brute.Un mois plus tard, une version Linux de Trigona a été trouvée qui partageait des similitudes avec son homologue Windows.Le ransomware Trigona est également lié au crylock en raison de leurs similitudes de tactique, de techniques et de procédures (TTP), de nom de fichier de note de rançon et d'adresses e-mail utilisées.
Le ransomware de Trigona a le plus ciblé les organisations gouvernementales, les tentatives d'attaque représentant 21,4% du total des détections, selon les commentaires des clients tendance qui ont détaillé les industries dans lesquelles ils appartiennent.Trigona a également ciblé les entreprises dans la technologie, le commerce de détail, les biens de consommation à évolution rapide et les industries bancaires.Le groupe a opposé les petites et moyennes entreprises, qui représentaient plus de la moitié des victimes totales du groupe d'avril à octobre 2023. Trigona a compromis un total de 33 organisations au cours de la période susmentionnée.
#### URL de référence (s)
1. https://www.trendmicro.com/vinfo/us/security/news/ransomware-spotlight/ransomware-spotlight-ttegona
#### Date de publication
28 novembre 2023
#### Auteurs)
Micro-recherche tendance
#### Description The Trigona ransomware, first tracked by Trend Micro as Water Ungaw, emerged in October 2022 but binaries of the ransomware were seen as early as June of the same year. The group positioned itself as running a lucrative scheme, launching global attacks and advertising revenues up to 20% to 50% for each successful attack.The group was also reported as communicating with network access brokers who provide compromised credentials via the Russian Anonymous Marketplace (RAMP) forum\'s internal chats and using the sourced information to obtain initial access to targets. In April 2023, Trigona started targeting compromised Microsoft SQL (MSSQL) Servers via brute-force attacks. A month later, a Linux version of Trigona was found that shared similarities with its Windows counterpart. The Trigona ransomware is also linked to CryLock due to their similarities in tactics, techniques, and procedures (TTPs), ransom note file name, and email addresses used. Trigona ransomware targeted government organizations the most, with attack attempts making up 21.4% of total detections, according to feedback from Trend customers who detailed the industries in which they belong. Trigona also targeted enterprises in the technology, retail, fast-moving consumer goods, and banking industries. The group set its sights on small- and medium-sized businesses, which made up more than half of the group\'s total victims from April to October 2023. Trigona compromised a total of 33 organizations within the aforementioned period. #### Reference URL(s) 1. https://www.trendmicro.com/vinfo/us/security/news/ransomware-spotlight/ransomware-spotlight-trigona #### Publication Date November 28, 2023 #### Author(s) Trend Micro Research |
Ransomware Prediction | ★★★ | |
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2023-11-02 20:07:38 | Dévoiler le côté obscur: une plongée profonde dans les familles de ransomwares actifs Unveiling the Dark Side: A Deep Dive into Active Ransomware Families (lien direct) |
#### Description
Dans le paysage en constante évolution de la cybersécurité, une tendance constante observée ces dernières années est l'augmentation troublante des attaques de ransomwares.Le groupe NCC partage TTP \\ déployé par quatre familles de ransomwares récemment observées lors des engagements de réponse aux incidents du NCC Group \\.Les familles de ransomwares qui seront explorées sont:
- Blackcat & # 8211;Il est également connu sous le nom d'ALPHV, observé pour la première fois en 2021, un ransomware en tant que service (RAAS) utilisant souvent la méthode d'extorsion à double extorsion pour le gain monétaire.
- Donut & # 8211; Le groupe d'extorsion D0nut a été signalé pour la première fois en août 2022 pour avoir violé les réseaux et exigeant des rançons en échange de ne pas fuiser des données volées.Quelques mois plus tard, les rapports du groupe utilisant le cryptage ainsi que l'exfiltration de données ont été publiés avec des spéculations selon lesquelles le ransomware déployé par le groupe a été lié à des ransomwares Helloxd.Il existe également des liens soupçonnés entre les affiliés D0nut et les opérations de ransomware de casier Hive et Ragnar.
- Medusa & # 8211;À ne pas confondre avec Medusalocker, Medusa a été observée pour la première fois en 2021, est un ransomware en tant que service (RAAS) utilisant souvent la méthode d'extorsion à double extorsion pour le gain monétaire.En 2023, l'activité des groupes \\ 'a augmenté avec le lancement du blog \' Medusa \\ '.Cette plate-forme sert d'outil pour divulguer des données appartenant aux victimes.
- NoEscape & # 8211;Fin mai 2023, un Ransomware nouvellement émergé en tant que service (RAAS) a été observé sur un forum de cybercriminalité nommé NoeScape.
#### URL de référence (s)
1. https://research.nccgroup.com/2023/10/31/unveiling-the-dark-side-a-plongée profonde-inactive-ransomware-families /
#### Date de publication
31 octobre 2023
#### Auteurs)
Alex Jessop
@Thissisfinechief
Molly Dewis
#### Description In the ever-evolving cybersecurity landscape, one consistent trend witnessed in recent years is the unsettling rise in ransomware attacks. NCC Group shares TTP\'s deployed by four ransomware families recently observed during NCC Group\'s incident response engagements. The ransomware families that will be explored are: - BlackCat – Also known as ALPHV, first observed in 2021, is a Ransomware-as-a-Service (Raas) often using the double extortion method for monetary gain. - Donut –The D0nut extortion group was first reported in August 2022 for breaching networks and demanding ransoms in return for not leaking stolen data. A few months later, reports of the group utilizing encryption as well as data exfiltration were released with speculation that the ransomware deployed by the group was linked to HelloXD ransomware. There is also suspected links between D0nut affiliates and both Hive and Ragnar Locker ransomware operations. - Medusa – Not to be confused with MedusaLocker, Medusa was first observed in 2021, is a Ransomware-as-a-Service (RaaS) often using the double extortion method for monetary gain. In 2023 the groups\' activity increased with the launch of the \'Medusa Blog\'. This platform serves as a tool for leaking data belonging to victims. - NoEscape – At the end of May 2023, a newly emerged Ransomware-as-a-Service (RaaS) was observed on a cybercrime forum named NoEscape. #### Reference URL(s) 1. https://research.nccgroup.com/2023/10/31/unveiling-the-dark-side-a-deep-dive-into-active-ransomware-families/ #### Publication Date October 31, 2023 #### Author(s) Alex Jessop @ThisIsFineChief Molly Dewis |
Ransomware Tool Prediction | ★★ |
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