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RiskIQ.webp 2024-07-15 11:27:07 Weekly OSINT Highlights, 15 July 2024 (lien direct) ## Snapshot Last week\'s OSINT reporting highlights a diverse array of cyber threats, showcasing the prominence of sophisticated malware, information stealers, and ransomware attacks. Attack vectors frequently include compromised websites, phishing emails, malicious advertisements, and exploitation of known vulnerabilities, particularly in widely-used software like Oracle WebLogic and Microsoft Exchange. Threat actors range from organized state-sponsored groups, such as China\'s APT41 (tracked by Microsoft as [Brass Typhoon](https://security.microsoft.com/intel-profiles/f0aaa62bfbaf3739bb92106688e6a00fc05eafc0d4158b0e389b4078112d37c6)) and APT40 (tracked by Microsoft as [Gingham Typhoon](https://security.microsoft.com/intel-profiles/a2fc1302354083f4e693158effdbc17987818a2433c04ba1f56f4f603268aab6)), to individual developers using platforms like GitHub to distribute malware. The targets are varied, encompassing financial institutions, cryptocurrency exchanges, government agencies, and sectors like healthcare, education, and manufacturing, with a notable focus on high-value data and critical infrastructure across multiple countries. ## Description 1. [Clickfix Infection Chain](https://security.microsoft.com/intel-explorer/articles/85fea057): McAfee Labs discovered the "Clickfix" malware delivery method that uses compromised websites and phishing emails to trick users into executing PowerShell scripts. This method is being used to deliver [Lumma](https://security.microsoft.com/intel-profiles/33933578825488511c30b0728dd3c4f8b5ca20e41c285a56f796eb39f57531ad)[Stealer](https://security.microsoft.com/intel-profiles/33933578825488511c30b0728dd3c4f8b5ca20e41c285a56f796eb39f57531ad) and [DarkGate](https://security.microsoft.com/intel-profiles/52fa311203e55e65b161aa012eba65621f91be7c43bacaaad126192697e6b648) malware across multiple countries, including the US, Canada, and China. 2. [CRYSTALRAY Expands Targeting](https://security.microsoft.com/intel-explorer/articles/ecea26df): Sysdig researchers identified the threat actor CRYSTALRAY, who has scaled operations to over 1,500 victims using SSH-Snake and various vulnerabilities for lateral movement and data exfiltration. Targets include systems vulnerable to CVE-2022-44877, CVE-2021-3129, and CVE-2019-18394. 3. [DodgeBox Loader by APT41](https://security.microsoft.com/intel-explorer/articles/3524d2ae): Zscaler ThreatLabz reported on DodgeBox, a reflective DLL loader used by the Chinese APT41 group, also known as Brass Typhoon. The loader delivers the MoonWalk backdoor and employs sophisticated techniques like call stack spoofing to avoid detection. 4. [ViperSoftX Information Stealer](https://security.microsoft.com/intel-explorer/articles/8084ff7b): Trellix researchers highlighted ViperSoftX, an information stealer spread through cracked software and malicious eBooks. The malware uses PowerShell and AutoIt for data exfiltration and evasion, targeting cryptocurrency wallets and other sensitive information. 5. [Coyote Banking Trojan](https://security.microsoft.com/intel-explorer/articles/201d7c4d): BlackBerry detailed Coyote, a .NET banking trojan targeting Brazilian financial institutions. Delivered likely via phishing, it performs various malicious functions like screen capture and keylogging, communicating with C2 servers upon detecting target domains. 6. [Kematian-Stealer on GitHub](https://security.microsoft.com/intel-explorer/articles/4e00b1b4): CYFIRMA identified Kematian-Stealer, an open-source information stealer hosted on GitHub. It targets applications like messaging apps and cryptocurrency wallets, employing in-memory execution and anti-debugging measures to evade detection. 7. [Eldorado Ransomware-as-a-Service](https://security.microsoft.com/intel-explorer/articles/3603cd85): Group-IB reported on Eldorado, a RaaS targeting various industries and countries, primarily the US. Written in Golang, it uses Chacha20 and RSA-OAEP encryption and has customizable features for targeted attacks. 8. [DoNex Ransomware Flaw](https://security.microsoft.com Ransomware Malware Tool Vulnerability Threat Legislation Prediction Medical APT 41 APT 40
RiskIQ.webp 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 ★★
Last update at: 2024-07-15 19:08:38
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