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| Src | Date (GMT) | Titre | Description | Tags | Stories | Notes |
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2024-05-03 20:14:15 | Les acteurs menacés attaquent les serveurs MS-SQL pour déployer des ransomwares Threat Actors Attacking MS-SQL Servers to Deploy Ransomware (lien direct) |
## Instantané
Les professionnels de la cybersécurité de GBhackers ont découvert une série de cyberattaques ciblant les serveurs Microsoft SQL (MS-SQL) mal gérés pour installer les ransomwares de Mallox sur les systèmes.
** En savoir plus sur la couverture de Microsoft \\ pour [MalloxRansomware ici.] (Https://sip.security.microsoft.com/intel-profiles/7fbe39c998c8a495a1652ac6f8bd34852c00f97dc61278cafc56dca1d443131e) **
##Description
Le modus operandi du groupe des acteurs de la menace implique d'exploiter les vulnérabilités dans des serveurs MS-SQL mal gérés.En utilisant des attaques de force brute et du dictionnaire, les attaquants obtiennent un accès non autorisé, ciblant principalement le compte SA (administrateur système système).
Une fois à l'intérieur, ils déploient l'outil d'accès à distance REMCOS (RAT) pour prendre le contrôle du système infecté.Remcos Rat, initialement utilisé pour la violation et le contrôle du système, a été réutilisé par des attaquants pour des activités malveillantes, avec des capacités telles que le keylogging, la capture de capture d'écran et le contrôle sur les webcams et les microphones.De plus, un logiciel malveillant à télécommande sur mesure est déployé, permettant aux attaquants d'accéder au système infecté à l'aide de l'ID AnyDesk obtenu à partir du serveur de commande et de contrôle.
Le ransomware de Mallox, connu pour cibler les serveurs MS-SQL, a ensuite été installé pour crypter le système.Mallox Ransomware, utilise des algorithmes de cryptage AES-256 et SHA-256, ajoutant une extension ".rmallox" aux fichiers cryptés.
Les modèles d'attaque observés dans cette campagne ressemblent à une ressemblance frappante avec les incidents précédents impliquant le Coinmin Tor2mine et le ransomware Bluesky, suggérant le travail du même groupe de menaces.
## Recommandations
La documentation technique Microsoft SQL Server et les étapes pour sécuriser les serveurs SQL peuvent être trouvées ici:
[Documentation de sécurité pour SQL Server & Azure SQL Base de données - SQL Server |Microsoft Learn] (https://learn.microsoft.com/en-us/sql/relationd-databases/security/security-center-for-sql-server-database-engine-and-azure-sql-database?view=SQL-Server-Ver16)
## Les références
["Les acteurs de la menace attaquant les serveurs MS-SQL pour déployer les ransomwares"] (https://gbhackers.com/ms-sql-deploy-ransomware/) GBHACKERS (consulté en 2024-05-03).
## Snapshot Cybersecurity professionals at GBHackers have discovered a series of cyberattacks targeting poorly managed Microsoft SQL (MS-SQL) servers to install Mallox Ransomware on systems. **Read more about Microsoft\'s coverage for [Mallox Ransomware here.](https://sip.security.microsoft.com/intel-profiles/7fbe39c998c8a495a1652ac6f8bd34852c00f97dc61278cafc56dca1d443131e)** ## Description The threat actor group\'s modus operandi involves exploiting vulnerabilities in improperly managed MS-SQL servers. By employing brute force and dictionary attacks, the attackers gain unauthorized access, primarily targeting the SA (System Administrator) account. Once inside, they deploy the Remcos Remote Access Tool (RAT) to take control of the infected system. Remcos RAT, initially used for system breach and control, has been repurposed by attackers for malicious activities, featuring capabilities such as keylogging, screenshot capture, and control over webcams and microphones. Additionally, a custom-made remote screen control malware is deployed, allowing attackers to gain access to the infected system using the AnyDesk ID obtained from the command and control server. Mallox ransomware, known for targeting MS-SQL servers, was then installed to encrypt the system. Mallox ransomware, utilizes AES-256 and SHA-256 encryption algorithms, appending a ".rmallox" extension to encrypted files. The attack patterns observed in this campaign bear a striking resemblance to |
Ransomware Malware Tool Vulnerability Threat Technical | ||
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2024-05-01 19:46:49 | Attaque "Stream Dirty": découvrir et atténuer un modèle de vulnérabilité commun dans les applications Android “Dirty stream” attack: Discovering and mitigating a common vulnerability pattern in Android apps (lien direct) |
## Snapshot Microsoft discovered a path traversal-affiliated vulnerability pattern in multiple popular Android applications that could enable a malicious application to overwrite files in the vulnerable application\'s home directory. The implications of this vulnerability pattern include arbitrary code execution and token theft, depending on an application\'s implementation. Arbitrary code execution can provide a threat actor with full control over an application\'s behavior. Meanwhile, token theft can provide a threat actor with access to the user\'s accounts and sensitive data. We identified several vulnerable applications in the Google Play Store that represented over four billion installations. We anticipate that the vulnerability pattern could be found in other applications. We\'re sharing this research so developers and publishers can check their apps for similar issues, fix as appropriate, and prevent introducing such vulnerabilities into new apps or releases. As threats across all platforms continue to evolve, industry collaboration among security researchers, security vendors, and the broader security community is essential in improving security for all. Microsoft remains committed to working with the security community to share vulnerability discoveries and threat intelligence to protect users across platforms. After discovering this issue, we identified several vulnerable applications. As part of our responsible disclosure policy, we notified application developers through Coordinated Vulnerability Disclosure (CVD) via Microsoft Security Vulnerability Research (MSVR) and worked with them to address the issue. We would like to thank the Xiaomi, Inc. and WPS Office security teams for investigating and fixing the issue. As of February 2024, fixes have been deployed for the aforementioned apps, and users are advised to keep their device and installed applications up to date. Recognizing that more applications could be affected, we acted to increase developer awareness of the issue by collaborating with Google to publish an article on the Android Developers website, providing guidance in a high-visibility location to help developers avoid introducing this vulnerability pattern into their applications. We also wish to thank Google\'s Android Application Security Research team for their partnership in resolving this issue. In this post, we continue to raise developer and user awareness by giving a general overview of the vulnerability pattern, and then focusing on Android share targets, as they are the most prone to these types of attacks. We go through an actual code execution case study where we demonstrate impact that extends beyond the mobile device\'s scope and could even affect a local network. Finally, we provide guidance to users and application developers and illustrate the importance of collaboration to improve security for all. ## Activity Overview ### Data and file sharing on Android The Android operating system enforces isolation by assigning each application its own dedicated data and memory space. To facilitate data and file sharing, Android provides a component called a content provider, which acts as an interface for managing and exposing data to the rest of the installed applications in a secure manner. When used correctly, a content provider provides a reliable solution. However, improper implementation can introduce vulnerabilities that could enable bypassing of read/write restrictions within an application\'s home directory. The Android software development kit (SDK) includes the [FileProvider](https://developer.android.com/reference/androidx/core/content/FileProvider) class, a subclass of ContentProvider that enables file sharing between installed applications. An application that needs to share its files with other applications can declare a FileProvider in its app manifest and declare the specific paths to share. Every file provider has a property called authority, which identifies it system-wide, and can b | Tool Vulnerability Threat Studies Mobile Technical | ★★★ | |
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2024-04-29 20:07:15 | De ransomware icedid à Dagon Locker en 29 jours From IcedID to Dagon Locker Ransomware in 29 Days (lien direct) |
## Instantané
Le rapport DFIR fournit un compte rendu détaillé d'une intrusion sophistiquée qui a commencé avec une campagne de phishing utilisant PromEthEustDS pour distribuer des logiciels malveillants icedid en août 2023.
## Description
Le malware icedid a établi la persistance, communiqué avec les serveurs C2 et a abandonné une balise de frappe de cobalt, qui a été utilisée pour le mouvement latéral, l'exfiltration des données et le déploiement des ransomwares.L'acteur de menace a également utilisé une suite d'outils tels que Rclone, NetScan, NBTScan, Anydesk, Seatt Libt, Sharefinder et Adfinind.L'intrusion a abouti au déploiement de ransomwares Dagon Locker après 29 jours.
Les acteurs de la menace ont utilisé diverses techniques pour obscurcir le fichier JavaScript et le coquille de cobalt grève, échapper à la détection, maintenir la persistance et effectuer des activités d'énumération du réseau.Les activités de l'acteur de menace comprenaient l'abus de fonctionnalités de mouvement latérale telles que le psexec et le protocole de bureau à distance (RDP), l'exfiltration des fichiers, le dumping et l'exfiltration des journaux d'événements de sécurité Windows et l'utilisation des commandes PowerShell exécutées à partir de la grève de Cobaltbalise.
De plus, l'acteur de menace a utilisé plusieurs techniques d'exfiltration, y compris l'utilisation de RClone et AWS CLI pour exfiltrer les données de l'infrastructure compromise.Le déploiement du ransomware Dagon Locker a été facilité par l'utilisation d'un script PowerShell personnalisé, AWScollector et un module Locker, avec une commande PowerShell spécifique exécutée à partir d'un contrôleur de domaine pour déployer le ransomware à différents systèmes.L'impact de cet incident a permis à tous les systèmes d'être affectés par les ransomwares Dagon Locker.
## Les références
[https://thedfirreport.com/2024/04/29/from-iced-to-dagon-locker-ransomware-in-29 days/-IDIDID-to-dagon-locker-ransomware en 29 jours /)
## Snapshot The DFIR report provides a detailed account of a sophisticated intrusion that began with a phishing campaign using PrometheusTDS to distribute IcedID malware in August 2023. ## Description The IcedID malware established persistence, communicated with C2 servers, and dropped a Cobalt Strike beacon, which was used for lateral movement, data exfiltration, and ransomware deployment. The threat actor also utilized a suite of tools such as Rclone, Netscan, Nbtscan, AnyDesk, Seatbelt, Sharefinder, and AdFind. The intrusion culminated in the deployment of Dagon Locker ransomware after 29 days. The threat actors employed various techniques to obfuscate the JavaScript file and the Cobalt Strike shellcode, evade detection, maintain persistence, and perform network enumeration activities. The threat actor\'s activities included the abuse of lateral movement functionalities such as PsExec and Remote Desktop Protocol (RDP), exfiltration of files, dumping and exfiltration of Windows Security event logs, and the use of PowerShell commands executed from the Cobalt Strike beacon. Additionally, the threat actor employed multiple exfiltration techniques, including the use of Rclone and AWS CLI to exfiltrate data from the compromised infrastructure. The deployment of the Dagon Locker ransomware was facilitated through the use of a custom PowerShell script, AWScollector, and a locker module, with a specific PowerShell command run from a domain controller to deploy the ransomware to different systems. The impact of this incident resulted in all systems being affected by the Dagon Locker ransomware. ## References [https://thedfirreport.com/2024/04/29/from-icedid-to-dagon-locker-ransomware-in-29-days/](https://thedfirreport.com/2024/04/29/from-icedid-to-dagon-locker-ransomware-in-29-days/) |
Ransomware Malware Tool Threat Technical | ★★★ | |
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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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2024-03-28 19:11:03 | Android Malware Vultur étend son envergure Android Malware Vultur Expands Its Wingspan (lien direct) |
#### Description
The authors behind Android banking malware Vultur have been spotted adding new technical features, which allow the malware operator to further remotely interact with the victim\'s mobile device. Vultur has also started masquerading more of its malicious activity by encrypting its C2 communication, using multiple encrypted payloads that are decrypted on the fly, and using the guise of legitimate applications to carry out its malicious actions.
#### Reference URL(s)
1. https://research.nccgroup.com/2024/03/28/android-malware-vultur-expands-its-wingspan/
#### Publication Date
March 28, 2024
#### Author(s)
Joshua Kamp
#### Description The authors behind Android banking malware Vultur have been spotted adding new technical features, which allow the malware operator to further remotely interact with the victim\'s mobile device. Vultur has also started masquerading more of its malicious activity by encrypting its C2 communication, using multiple encrypted payloads that are decrypted on the fly, and using the guise of legitimate applications to carry out its malicious actions. #### Reference URL(s) 1. https://research.nccgroup.com/2024/03/28/android-malware-vultur-expands-its-wingspan/ #### Publication Date March 28, 2024 #### Author(s) Joshua Kamp |
Malware Mobile Technical | ★★★ | |
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2024-03-26 17:11:47 | Campagne à grande échelle de Strelaslateal au début de 2024 Large-Scale StrelaStealer Campaign in Early 2024 (lien direct) |
#### Description
Strelastealer est un logiciel malveillant qui cible les clients de messagerie pour voler des données de connexion, en l'envoyant au serveur de l'attaquant \\ pour des attaques potentielles supplémentaires.Depuis l'émergence de Strelaslealer \\ en 2022, l'acteur de menace a lancé plusieurs campagnes de messagerie à grande échelle, ses dernières campagnes ayant un impact sur 100 organisations à travers l'UE et les attaquants américains ont ciblé des organisations dans une variété d'industries, mais des organisations dans laL'industrie de la haute technologie a été la plus grande cible.L'analyse technique de Strelaslaster révèle une chaîne d'infection en évolution utilisant des pièces jointes ZIP, des fichiers JScript et des charges utiles de DLL mises à jour, démontrant l'adaptabilité du malware \\ et le défi qu'il pose aux analystes et produits de sécurité.
#### URL de référence (s)
1. https: // Unit42.paloaltonetworks.com/strelastealer-campage/
#### Date de publication
22 mars 2024
#### Auteurs)
Benjamin Chang, Goutam Tripathy, Pranay Kumar Chhapurwal, Anmol Maurya et Vishwa Thothathri
#### Description StrelaStealer is a malware that targets email clients to steal login data, sending it to the attacker\'s server for potential further attacks. Since StrelaStealer\'s emergence in 2022, the threat actor has launched multiple large-scale email campaigns, with its most recent campaigns impacting over 100 organizations across the EU and U.S. Attackers have targeted organizations in a variety of industries, but organizations in the high tech industry have been the biggest target. Technical analysis of StrelaStealer reveals an evolving infection chain using ZIP attachments, JScript files, and updated DLL payloads, demonstrating the malware\'s adaptability and the challenge it poses to security analysts and products. #### Reference URL(s) 1. https://unit42.paloaltonetworks.com/strelastealer-campaign/ #### Publication Date March 22, 2024 #### Author(s) Benjamin Chang, Goutam Tripathy, Pranay Kumar Chhaparwal, Anmol Maurya, and Vishwa Thothathri |
Malware Threat Technical | ★★ | |
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2024-03-05 19:03:47 | Rester en avance sur les acteurs de la menace à l'ère de l'IA Staying ahead of threat actors in the age of AI (lien direct) |
## Snapshot Over the last year, the speed, scale, and sophistication of attacks has increased alongside the rapid development and adoption of AI. Defenders are only beginning to recognize and apply the power of generative AI to shift the cybersecurity balance in their favor and keep ahead of adversaries. At the same time, it is also important for us to understand how AI can be potentially misused in the hands of threat actors. In collaboration with OpenAI, today we are publishing research on emerging threats in the age of AI, focusing on identified activity associated with known threat actors, including prompt-injections, attempted misuse of large language models (LLM), and fraud. Our analysis of the current use of LLM technology by threat actors revealed behaviors consistent with attackers using AI as another productivity tool on the offensive landscape. You can read OpenAI\'s blog on the research [here](https://openai.com/blog/disrupting-malicious-uses-of-ai-by-state-affiliated-threat-actors). Microsoft and OpenAI have not yet observed particularly novel or unique AI-enabled attack or abuse techniques resulting from threat actors\' usage of AI. However, Microsoft and our partners continue to study this landscape closely. The objective of Microsoft\'s partnership with OpenAI, including the release of this research, is to ensure the safe and responsible use of AI technologies like ChatGPT, upholding the highest standards of ethical application to protect the community from potential misuse. As part of this commitment, we have taken measures to disrupt assets and accounts associated with threat actors, improve the protection of OpenAI LLM technology and users from attack or abuse, and shape the guardrails and safety mechanisms around our models. In addition, we are also deeply committed to using generative AI to disrupt threat actors and leverage the power of new tools, including [Microsoft Copilot for Security](https://www.microsoft.com/security/business/ai-machine-learning/microsoft-security-copilot), to elevate defenders everywhere. ## Activity Overview ### **A principled approach to detecting and blocking threat actors** The progress of technology creates a demand for strong cybersecurity and safety measures. For example, the White House\'s Executive Order on AI requires rigorous safety testing and government supervision for AI systems that have major impacts on national and economic security or public health and safety. Our actions enhancing the safeguards of our AI models and partnering with our ecosystem on the safe creation, implementation, and use of these models align with the Executive Order\'s request for comprehensive AI safety and security standards. In line with Microsoft\'s leadership across AI and cybersecurity, today we are announcing principles shaping Microsoft\'s policy and actions mitigating the risks associated with the use of our AI tools and APIs by nation-state advanced persistent threats (APTs), advanced persistent manipulators (APMs), and cybercriminal syndicates we track. These principles include: - **Identification and action against malicious threat actors\' use:** Upon detection of the use of any Microsoft AI application programming interfaces (APIs), services, or systems by an identified malicious threat actor, including nation-state APT or APM, or the cybercrime syndicates we track, Microsoft will take appropriate action to disrupt their activities, such as disabling the accounts used, terminating services, or limiting access to resources. - **Notification to other AI service providers:** When we detect a threat actor\'s use of another service provider\'s AI, AI APIs, services, and/or systems, Microsoft will promptly notify the service provider and share relevant data. This enables the service provider to independently verify our findings and take action in accordance with their own policies. - **Collaboration with other stakeholders:** Microsoft will collaborate with other stakeholders to regularly exchange information a | Ransomware Malware Tool Vulnerability Threat Studies Medical Technical | APT 28 ChatGPT APT 4 | ★★ |
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2024-03-01 20:49:50 | Les opérateurs de logiciels espions prédateurs reconstruisent l'infrastructure à plusieurs niveaux pour cibler les appareils mobiles Predator Spyware Operators Rebuild Multi-Tier Infrastructure to Target Mobile Devices (lien direct) |
#### Description
Le groupe INSIKT de Future \\ a découvert de nouvelles infrastructures liées aux opérateurs de Predator, un logiciel spymétrique mobile mercenaire.L'infrastructure serait utilisée dans au moins onzepays, dont l'Angola, l'Arménie, le Botswana, l'Égypte, l'Indonésie, le Kazakhstan, la Mongolie, Oman, les Philippines, l'Arabie saoudite,et Trinidad et Tobago.Bien qu'il soit commercialisé pour la lutte contre le terrorisme et les forces de l'ordre, Predator est souvent utilisé contre la société civile, ciblant les journalistes, les politiciens et les militants.
L'utilisation de logiciels espions comme Predator présente des risques importants pour la confidentialité, la légalité et la sécurité physique, en particulier lorsqu'ils sont utilisés en dehors des contextes graves de criminalité et de lutte contre le terrorisme.La recherche du groupe INSIKT \\ a identifié une nouvelle infrastructure de livraison de prédateurs à plusieurs niveaux, avec des preuves de l'analyse du domaine et des données de renseignement du réseau.Malgré les divulgations publiques en septembre 2023, les opérateurs de Predator \\ ont poursuivi leurs opérations avec un minimum de changements.Predator, aux côtés de Pegasus de NSO Group \\, reste un principal fournisseur de logiciels espions mercenaires, avec des tactiques, des techniques et des procédures cohérentes au fil du temps.À mesure que le marché des logiciels espions mercenaires se développe, les risques s'étendent au-delà de la société civile à toute personne intéressée aux entités ayant accès à ces outils.Les innovations dans ce domaine sont susceptibles de conduire à des capacités de logiciels espions plus furtifs et plus complets.
#### URL de référence (s)
1. https://www.recordedfuture.com/predator-spyware-operators-rebuild-multi-tier-infrastructure-target-mobile-devices
#### Date de publication
1er mars 2024
#### Auteurs)
Groupe insikt
#### Description Recorded Future\'s Insikt Group has discovered new infrastructure related to the operators of Predator, a mercenary mobile spyware. The infrastructure is believed to be in use in at least eleven countries, including Angola, Armenia, Botswana, Egypt, Indonesia, Kazakhstan, Mongolia, Oman, the Philippines, Saudi Arabia, and Trinidad and Tobago. Despite being marketed for counterterrorism and law enforcement, Predator is often used against civil society, targeting journalists, politicians, and activists. The use of spyware like Predator poses significant risks to privacy, legality, and physical safety, especially when used outside serious crime and counterterrorism contexts. The Insikt Group\'s research identified a new multi-tiered Predator delivery infrastructure, with evidence from domain analysis and network intelligence data. Despite public disclosures in September 2023, Predator\'s operators have continued their operations with minimal changes. Predator, alongside NSO Group\'s Pegasus, remains a leading provider of mercenary spyware, with consistent tactics, techniques, and procedures over time. As the mercenary spyware market expands, the risks extend beyond civil society to anyone of interest to entities with access to these tools. Innovations in this field are likely to lead to more stealthy and comprehensive spyware capabilities. #### Reference URL(s) 1. https://www.recordedfuture.com/predator-spyware-operators-rebuild-multi-tier-infrastructure-target-mobile-devices #### Publication Date March 1, 2024 #### Author(s) Insikt Group |
Tool Mobile Technical | ★★ | |
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2024-01-31 21:23:24 | ESET participe à une opération mondiale pour perturber le Trojan bancaire Grandoreiro ESET Takes Part in Global Operation to Disrupt the Grandoreiro Banking Trojan (lien direct) |
#### Description
ESET a travaillé avec la police fédérale du Brésil dans le but de perturber le botnet Grandoreiro, fournissant une analyse technique, des informations statistiques et des serveurs C&C connus aux autorités.
Grandoreiro est un cheval de Troie bancaire latino-américain qui est actif depuis au moins 2017 et cible le Brésil, le Mexique et l'Espagne.Les opérateurs de Grandoreiro \\ ont abusé des fournisseurs de cloud tels que Azure et AWS pour héberger leur infrastructure réseau.
#### URL de référence (s)
1. https://www.welivesecurity.com/en/eset-research/eset-takes-partit-hobal-opération-srupt-grandoreiro-banking-trojan/
#### Date de publication
30 janvier 2024
#### Auteurs)
Recherche ESET
#### Description ESET has worked with the Federal Police of Brazil on an effort to disrupt the Grandoreiro botnet, providing technical analysis, statistical information and known C&C servers to the authorities. Grandoreiro is a Latin American banking trojan that has been active since at least 2017 and targets Brazil, Mexico, and Spain. Grandoreiro\'s operators have abused cloud providers such as Azure and AWS to host their network infrastructure. #### Reference URL(s) 1. https://www.welivesecurity.com/en/eset-research/eset-takes-part-global-operation-disrupt-grandoreiro-banking-trojan/ #### Publication Date January 30, 2024 #### Author(s) ESET Research |
Cloud Technical | ★★★ | |
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2023-11-21 21:19:53 | Agent Tesla: le format d'archive ZPAQ inhabituel fournit des logiciels malveillants Agent Tesla: Unusual ZPAQ Archive Format Delivers Malware (lien direct) |
#### Description
Une nouvelle variante de l'agent Tesla a été découverte qui utilise l'extension de fichier archive ZPAQ et .wav pour infecter les systèmes et voler des informations à environ 40 navigateurs Web et divers clients de messagerie.ZPAQ est un format de compression de fichiers qui offre un meilleur rapport de compression et une fonction de journalisation par rapport à des formats largement utilisés comme ZIP et RAR.Cependant, le ZPAQ a un support logiciel limité, ce qui rend difficile le travail, en particulier pour les utilisateurs sans expertise technique.Le fichier exécutable .NET est gonflé avec zéro octets, ce qui permet aux acteurs de menace de contourner les mesures de sécurité traditionnelles et d'augmenter l'efficacité de leur attaque.
L'utilisation du format de compression ZPAQ soulève plus de questions que de réponses.Les hypothèses ici sont que les acteurs de la menace ciblent un groupe spécifique de personnes qui ont des connaissances techniques ou utilisent des outils d'archives moins connus, ou ils testent d'autres techniques pour diffuser plus rapidement les logiciels malveillants et contourner les logiciels de sécurité.
Le malware utilise Telegram en tant que C&C en raison de son utilisation juridique généralisée et du fait que son trafic est souvent autorisé à travers des pare-feu, ce qui en fait un support utile pour une communication secrète.Comme tout autre voleur, l'agent Tesla peut nuire non seulement aux particuliers mais aussi aux organisations.Il a gagné en popularité parmi les cybercriminels pour de nombreuses raisons, notamment la facilité d'utilisation, la polyvalence et l'abordabilité sur le Dark Web.
#### URL de référence (s)
1. https://www.gdatasoftware.com/blog/2023/11/37822-agent-Tesla-zpaq
#### Date de publication
20 novembre 2023
#### Auteurs)
Anna Lvova
#### Description A new variant of Agent Tesla has been discovered that uses the ZPAQ archive and .wav file extension to infect systems and steal information from approximately 40 web browsers and various email clients. ZPAQ is a file compression format that offers a better compression ratio and journaling function compared to widely used formats like ZIP and RAR. However, ZPAQ has limited software support, making it difficult to work with, especially for users without technical expertise. The .NET executable file is bloated with zero bytes, which allows threat actors to bypass traditional security measures and increase the effectiveness of their attack. The usage of the ZPAQ compression format raises more questions than answers. The assumptions here are that either threat actors target a specific group of people who have technical knowledge or use less widely known archive tools, or they are testing other techniques to spread malware faster and bypass security software. The malware uses Telegram as a C&C due to its widespread legal usage and the fact that its traffic is often allowed through firewalls, making it a useful medium for covert communication. Like any other stealer, Agent Tesla can harm not only private individuals but also organizations. It has gained popularity among cybercriminals for many reasons including ease of use, versatility, and affordability on the Dark Web. #### Reference URL(s) 1. https://www.gdatasoftware.com/blog/2023/11/37822-agent-tesla-zpaq #### Publication Date November 20, 2023 #### Author(s) Anna Lvova |
Malware Tool Threat Technical | ★★★ |
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