## 19 April 2022 The following information is being provided by the FBI, with no guarantees or warranties, for potential _use at the sole discretion of recipients to protect against cyber threats. This data is provided in order_ _to help cyber security professionals and system administrators to guard against the persistent malicious_ FLASH Number _actions of cyber actors. This FLASH was coordinated with DHS/CISA._ #### CU-000167-MW This FLASH has been released TLP:WHITE **WE NEED YOUR HELP!** If you identify any suspicious activity within your enterprise or have related information, ###### please contact your local FBI Cyber Squad immediately with respect to the procedures outlined in the Reporting Notice section of this message. *Note: By reporting any related information to FBI Cyber Squads, you are assisting in sharing information that allows the FBI to track _malicious actors and coordinate with private industry and the United States Government to prevent future intrusions and attacks._ # BlackCat/ALPHV Ransomware Indicators of Compromise ## Summary This FLASH is part of a series of FBI reports to disseminate known indicators of compromise (IOCs) and tactics, techniques and procedures (TTPs) associated with ransomware variants identified through FBI investigations. As of March 2022, BlackCat/ALPHV ransomware as a service (RaaS) had compromised at least 60 entities worldwide and is the first ransomware group to do so successfully using RUST, considered to be a more secure programming language that offers improved performance and reliable concurrent processing. BlackCat-affiliated threat actors typically request ransom payments of several million dollars in Bitcoin and Monero but have accepted ransom payments below the initial ransom demand amount. Many of the developers and money launderers for BlackCat/ALPHV are linked to Darkside/Blackmatter, indicating they have extensive networks and experience with ransomware operations. ----- ## Technical Details BlackCat/ALPHV ransomware leverages previously compromised user credentials to gain initial access to the victim system. Once the malware establishes access, it compromises Active Directory user and administrator accounts. The malware uses Windows Task Scheduler to configure malicious Group Policy Objects (GPOs) to deploy ransomware. Initial deployment of the malware leverages PowerShell scripts, in conjunction with Cobalt Strike, and disables security features within the victim’s network. BlackCat/ALPHV ransomware also leverages Windows administrative tools and Microsoft Sysinternals tools during compromise. BlackCat/ALPHV steals victim data prior to the execution of the ransomware, including from cloud providers where company or client data was stored. The actors leverage Windows scripting to deploy ransomware and to compromise additional hosts. For example, the following batch and PowerShell scripts were observed: - `start.bat - launches the ransomware executable with required arguments` - `est.bat - copies the ransomware to other locations` - `drag-and-drop-target.bat - launches the ransomware executable for the MySQL Server` - `run.bat - executes a callout command to an external server using SSH - file names may change` depending on the company and systems affected - `Runs1.ps1 – PowerShell script to disable McAfee` ## Indicators The following are characteristics of compromise by BlackCat/ALPHV, as of mid-February 2022: **PowerShell Scripts** **Filename** **MD5 Hash** amd - Copy.ps1 861738dd15eb7fb50568f0e39a69e107 ipscan.ps1 9f60dd752e7692a2f5c758de4eab3e6f Run1.ps1 09bc47d7bc5e40d40d9729cec5e39d73 **Additional PowerShell Filenames** [###].ps1 CME.ps1 [#].ps1 Run1.ps1 mim.ps1 [##].ps1 psexec.ps1 Systems.ps1 System.ps1 ----- **Batch Scripts** **Filename** **MD5 Hash** CheckVuln.bat f5ef5142f044b94ac5010fd883c09aa7 Create-share-RunAsAdmin.bat 84e3b5fe3863d25bb72e25b10760e861 LPE-Exploit-RunAsUser.bat 9f2309285e8a8471fce7330fcade8619 RCE-Exploit-RunAsUser.bat 6c6c46bdac6713c94debbd454d34efd9 est.bat e7ee8ea6fb7530d1d904cdb2d9745899 runav.bat 815bb1b0c5f0f35f064c55a1b640fca5 **Executables and DLLs** **Filename** **MD5 Hash** http_x64.exe 6c2874169fdfb30846fe7ffe34635bdb spider.dll 20855475d20d252dda21287264a6d860 spider_32.dll 82db4c04f5dcda3bfcd75357adf98228 powershell.dll fcf3a6eeb9f836315954dae03459716d rpcdump.exe 91625f7f5d590534949ebe08cc728380 **Filename** **SHA1 Hash** mimikatz.exe d241df7b9d2ec0b8194751cd5ce153e27cc40fa4 run.exe 4831c1b113df21360ef68c450b5fca278d08fae2 zakrep_plink.exe fce13da5592e9e120777d82d27e06ed2b44918cf beacon.exe 3f85f03d33b9fe25bcfac611182da4ab7f06a442 win1999.exe 37178dfaccbc371a04133d26a55127cf4d4382f8 _[compromised company].exe_ 1b2a30776df64fbd7299bd588e21573891dcecbe **Additional Observed Filenames** test.exe xxx.exe Mim.exe xxxw.exe crackmapexec.exe Services.exe plink.exe Systems.exe PsExec64.exe **BlackCat Ransomware SHA256 Hashes:** 731adcf2d7fb61a8335e23dbee2436249e5d5753977ec465754c6b699e9bf161 f837f1cd60e9941aa60f7be50a8f2aaaac380f560db8ee001408f35c1b7a97cb 731adcf2d7fb61a8335e23dbee2436249e5d5753977ec465754c6b699e9bf161 80dd44226f60ba5403745ba9d18490eb8ca12dbc9be0a317dd2b692ec041da28 **C2 IPs:** 89.44.9.243 142.234.157.246 45.134.20.66 185.220.102.253 37.120.238.58 152.89.247.207 198.144.121.93 89.163.252.230 45.153.160.140 23.106.223.97 139.60.161.161 146.0.77.15 94.232.41.155 |Batch Scripts|Col2| |---|---| |Filename MD5 Hash|| |CheckVuln.bat f5ef5142f044b94ac5010fd883c09aa7|| |Create-share-RunAsAdmin.bat 84e3b5fe3863d25bb72e25b10760e861|| |LPE-Exploit-RunAsUser.bat 9f2309285e8a8471fce7330fcade8619|| |RCE-Exploit-RunAsUser.bat 6c6c46bdac6713c94debbd454d34efd9|| |est.bat e7ee8ea6fb7530d1d904cdb2d9745899|| |runav.bat|815bb1b0c5f0f35f064c55a1b640fca5| |C2 IPs:|Col2| |---|---| |89.44.9.243 142.234.157.246 45.134.20.66 185.220.102.253|| |37.120.238.58 152.89.247.207 198.144.121.93 89.163.252.230|| |45.153.160.140 23.106.223.97 139.60.161.161 146.0.77.15|| |94.232.41.155|| ----- ## Information Requested: The FBI is seeking any information that can be shared, to include IP logs showing callbacks from foreign IP addresses, Bitcoin or Monero addresses and transaction IDs, communications with the threat actors, the decryptor file, and/or a benign sample of an encrypted file. ## Recommended Mitigations: The FBI does not encourage paying ransoms. Payment does not guarantee files will be recovered. It may also embolden adversaries to target additional organizations, encourage other criminal actors to engage in the distribution of ransomware, and/or fund illicit activities. However, the FBI understands that when victims are faced with an inability to function, all options are evaluated to protect shareholders, employees and customers. Regardless of whether you or your organization have decided to pay the ransom, the FBI urges you to promptly report ransomware incidents to your local FBI field office. Doing so provides the FBI with critical information needed to prevent future attacks by identifying and tracking ransomware attackers and holding them accountable under US law. - Review domain controllers, servers, workstations, and active directories for new or unrecognized user accounts. - Regularly back up data, air gap, and password protect backup copies offline. Ensure copies of critical data are not accessible for modification or deletion from the system where the data resides. - Review Task Scheduler for unrecognized scheduled tasks. Additionally, manually review operating system defined or recognized scheduled tasks for unrecognized “actions” (for example: review the steps each scheduled task is expected to perform). - Review antivirus logs for indications they were unexpectedly turned off. - Implement network segmentation. - Require administrator credentials to install software. - Implement a recovery plan to maintain and retain multiple copies of sensitive or proprietary data and servers in a physically separate, segmented, secure location (e.g., hard drive, storage device, the cloud). - Install updates/patch operating systems, software, and firmware as soon as updates/patches are released. - Use multifactor authentication where possible. - Regularly change passwords to network systems and accounts, and avoid reusing passwords for different accounts. - Implement the shortest acceptable timeframe for password changes. - Disable unused remote access/Remote Desktop Protocol (RDP) ports and monitor remote access/RDP logs. - Audit user accounts with administrative privileges and configure access controls with least privilege in mind. - Install and regularly update antivirus and anti-malware software on all hosts. ----- - Only use secure networks and avoid using public Wi-Fi networks. Consider installing and using a virtual private network (VPN). - Consider adding an email banner to emails received from outside your organization. - Disable hyperlinks in received emails. ## Reporting Notice ###### The FBI encourages recipients of this document to report information concerning suspicious or criminal activity to their local FBI field office. With regards to specific information that appears in this communication; the context, individual indicators, particularly those of a non- deterministic or ephemeral nature (such as filenames or IP addresses), may not be indicative of a compromise. Indicators should always be evaluated in light of your complete information security situation. Field office contacts can be identified at www.fbi.gov/contact-us/field-offices. When available, each report submitted should include the date, time, location, type of activity, number of people, and type of equipment used for the activity, the name of the submitting company or organization, and a designated point of contact. ## Administrative Note ###### This product is marked TLP:WHITE. Subject to standard copyright rules, the information in this product may be shared without restriction. ### Your Feedback Regarding this Product is Critical #### Was this product of value to your organization? Was the content clear and concise? Your comments are very important to us and can be submitted anonymously. Please take a moment to complete the survey at the link below. Feedback should be specific to your experience with our written products to enable the FBI to make quick and continuous improvements to such products. Feedback may be submitted online here: ## https://www.ic3.gov/PIFSurvey #### Please note that this survey is for feedback on content and value only. Reporting of technical -----