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Its noteworthy due to its unconventional programming language (Rust), multiple target devices and possible entry points, and affiliation with prolific threat activity groups. Additionally, any ESXi snapshots are removed to harden recovery from the attack. It was a full two weeks from the initial compromise before the attackers progressed to ransomware deployment, thus highlighting the need for triaging and scoping out alert activity to understand accounts and the scope of access an attacker gained from their activity. The attackers continued their previous discovery efforts using a PowerShell script version of ADRecon (ADRecon.ps1), which is a tool designed to gather extensive information about an Active Directory (AD) environment. Figure 1: Countries Targeted by BlackCat Ransomware Gang Noberus Ransomware: Darkside and BlackMatter Successor Continues to Most recently, hacking groups have been specifically targeting them to deploy BlackCat ransomware. In this post, we describe a real engagement that we recently handled by giving details about the tools, techniques, and procedures (TTPs) used by this threat actor. In February 2019, security researchers discovered the use of Clop by the threat group known as TA505 when it launched a large-scale spear-phishing email campaign. For example, it carries out some noisy activities that can be detected with Alien Labs correlation rules, as seen in Appendix A: In addition to the options shown in figure 1, the latest samples have added three additional functions that increase the ransomware capabilities. Figure 2 breaks down the victims by country. Thus, no two BlackCat "lives" or deployments might look the same. By leveraging the Rust programming language, the malware authors are able to easily compile it against various operating system architectures, which facilitates the groups ability to pivot from one victim to the next. BlackCat ransomware remains a serious threat because it targets Windows hosts, Linux hosts, and VMWare ESXi. Weve observed that this group added BlackCat to their list of distributed payloads beginning March 2022. Partner with SecurityScorecard and leverage our global cybersecurity ratings leadership to expand your solution, deliver more value, and win new business. BlackCat can bypass UAC, which means the payload will successfully run even if it runs from a non-administrator context. ALPHV is written in the Rust programming language and supports execution on Windows, Linux-based operating systems (Debian, Ubuntu, ReadyNAS, Synology), and VMWare ESXi. As shown in Figure 1, the ransomware added a parameter called safeboot that is used to reboot in Safe Mode. While Conti (ranked second) has been around in various guises for almost two years, it is surrounded at the top of the chart by emerging families. BlackCat ransomware has been found to exploit compromised user credentials, unpatched or outdated firewall/VPN devices, public-facing applications, and unpatched Exchange servers to gain initial access to the system. Using the leak site information, we can understand the location and types of victims affected by BlackCat attacks. In this blog, we provide details about the ransomwares techniques and capabilities. Use of BlackCat ransomware has grown quickly for a variety of reasons (for comparison, AvosLocker had only listed a handful of victims publicly within two months of becoming known). A successor to BlackMatter and REvil gangs, BlackCat - Kaspersky We use cookies to provide you with a great user experience. The campaigns couldtake the form of ransomware attacks or data wiper attacks, as these have been the highly successful in recent years, especially when combined with supply chain attacks. In the same directory with Process Hacker, the BlackCat ransomware dropped a copy of the PEView tool, which is a viewer for Portable Executable (PE) files. Ransomware adversaries are not above ransoming the same organization twice if access is not fully remediated. Doubts. The attackers then signed out. A list of services the victim should kill according to the attacker, before executing the encryption process usually services modifying files that could corrupt files or backup services that could become counter-productive to the malicious execution. PDF BlackMatter Ransomware - U.S. Department of Defense Following trends observed last year by Alien Labs, the ransomware targets multiple platforms (Windows and Linux), and it uses additional code to infect VMware's ESXi hypervisor. BlackCat ransomware | AT&T Cybersecurity Ransomware Renaissance 2023: The Definitive Guide to Stay Safer In an effort to maintain persistence, the BlackCat ransomware excludes key system and application folders as well as key components from encryption so as not to render the system and ransomware inoperative. SecurityScorecard1140 Avenue of the AmericasSuite 19New York, 10036. Join us in making the world a safer place. However, considering geo-political events in Eastern Europe, these attacks should serve as a strong reminder that organizations must remain on high alert against cyberattacks. Credential access permits the ransomware to deploy additional tools that further propagate the attack. High-profile ransomware attacks dominated 2022's headlines. BlackCat Ransomware: Tactics and Techniques From a Targeted - Netskope According to a new CISA advisory, the group has . Use this query to look for processes executing in PerfLogsa common path used to place the ransomware payloads. As is common among ransomware attacks, the hackers here first rifle through an infected network, looking for login credentials, proprietary information, and other sensitive files that they can copy and exfiltrate. Finally, advanced hunting lets defenders create custom detections to proactively surface this ransomware and other related threats. In this blog post, we will provide details on a BlackCat ransomware incident that occurred in February 2023, where we observed a new capability, mainly used for the defense evasion phase. In one incident weve observed, attackers took advantage of an unpatched Exchange server to enter the target organization. History of Clop. Written in the Russian language, the control panel gives the affiliate updates and announcements about deploying and operating the ransomware as well as troubleshooting tips to help the affiliate be more successful in their campaigns. Rust also facilitates the BlackCat author due to its efficiency regarding algorithms that power the encryption capability of the ransomware. Ransomware Spotlight: Clop - Security News Suspicious process execution in PerfLogs path. Also of note: The CISA in May 2022 issued this cyber warning to MSPs and service providers. BlackMatter ransomware. Conclusion Delete Volume Shadow Copies Services to harden recovery from the attack. Edge Ecosystem. It leverages that access to compromise user and admin accounts in the Active Directory. It has extensive capabilities, including self-propagation configurable by an affiliate for their usage and to environment encountered. T1048: Exfiltration Over Alternative Protocol, T1048.002: Exfiltration Over Asymmetric Encrypted Non-C2 Protocol, https://www.varonis.com/blog/alphv-blackcat-ransomware, https://unit42.paloaltonetworks.com/blackcat-ransomware. BlackCat Ransomware Deploys New Signed Kernel Driver. These #StopRansomware advisories include recently and historically observed tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs) to help organizations protect against ransomware. Most of these victims are from the United States, Germany, Canada, France, and Italy. Ransomware. AT&T Alien Labs welcomes feedback about the reported intelligence and delivery process. The process first broadcasts NetBIOS Name Service (NBNC) messages to check for these additional devices. Falcon OverWatch Contributes to BlackCat Protection | CrowdStrike While their TTPs remain largely the same (for example, using tools like Mimikatz and PsExec to deploy the ransomware payload), BlackCat-related compromises have varying entry vectors, depending on the ransomware affiliate conducting the attack. The services running on the compromised system are checked against the following list: mepocs, memtas, veeam, svc$, backup, sql, vss, msexchange, sql$, mysql, mysql$, sophos, MSExchange, MSExchange$, WSBExchange, PDVFSService, BackupExecVSSProvider, BackupExecAgentAccelerator, BackupExecAgentBrowser, BackupExecDiveciMediaService, BackupExecJobEngine, BackupExecManagementService, BackupExecRPCService, GxBlr, GxVss, GxClMgrS, GxCVD, GxCIMgr, GXMMM, GxVssHWProv, GxFWD, SAPService, SAP, SAP$, SAPD$, SAPHostControl, SAPHostExec, QBCFMonitorService, QBDBMgrN, QBIDPService, AcronisAgent, VeeamNFSSvc, VeeamDeploymentService, VeeamTransportSvc, MVArmor, MVarmor64, VSNAPVSS, AcrSch2Svc. The incidents weve observed related to the BlackCat ransomware leverage these two factors, making this threat durable against conventional security and defense approaches that only focus on detecting the ransomware payloads. Hardcoded credentials stored within the BlackCat ransomware config lend credence to the likelihood that specific victims are being targeted. (TTPs). FBI TLP White Flash Report BlackCat/ALPHV Ransomware Indicators of A list of indicators is also available in the OTX Pulse. The folders excluded are as follows: system volume information, intel, $windows.~ws, application data, $recycle.bin, mozilla, $windows.~bt, public, msocache, windows, default, all users, tor browser, programdata, boot, config.msi, google, perflogs, appdata, windows.old, desktop.ini, autorun.inf, ntldr, bootsect.bak, thumbs.db, boot.ini, ntuser.dat, iconcache.db, bootfont.bin, ntuser.ini, ntuser.dat.log. Known LockBit 3.0 ransomware IOCs and TTPs found in recent assaults, US Additionally, it is a cross platform language, allowing developers to target several operating systems with the same code. in ( wevtutil.exe el ) DO wevtutil.exe cl \Incorrect function. Process Hacker was also installed by the malware and could be used to dump the memory of the LSASS process. BlackMatter Ransomware Analysis, TTPs and IOCs - Picus Security Microsoft tracks one of these affiliate groups as DEV-0237. Noberus Ransomware: Darkside and BlackMatter Successor Continues to A complete analysis of the BlackCat ransomware can be found here. The Federal Bureau of Investigation (FBI), the Multi-State Information Sharing & Analysis Center (MS-ISAC), and the Cybersecurity and Infrastructure Security Agency (CISA) published a joint advisory with known LockBit 3.0 ransomware IOCs (indicators of compromise) and TTPs (tactics, techniques, and procedures) identified through FBI investigations as recently as March 2023.

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