Query: alert when Detects the load of RstrtMgr DLL (Restart Manager) by an uncommon process. This library has been used during ransomware
Matching passage: Sigma rule: Detects the load of RstrtMgr DLL (Restart Manager) by an uncommon process. This library has been used during ransomware. Logsource: windows / image_load. Rule: title: Load Of RstrtMgr.DLL By An Uncommon Process id: 3669afd2-9891-4534-a626-e5cf03810a61 related: - id: b48492dc-c5ef-4572-8dff-32bc241c15c8 type: derived status: test description: 'Detects the load of RstrtMgr DLL (Restart Manager) by an uncommon process. This library has been used during ransomware campaigns to kill processes that would prevent file encryption by locking them (e.g. Conti ransomware, Cactus ransomware). It has also recently been seen used by the BiBi wiper for Windows. It could also be used for anti-analysis purposes by shut downing specific processes. ' references: - https://www.crowdstrike.com/blog/windows-restart-manager-part-1/ - https://www.crowdstrike.com/blog/windows-restart-manager-part-2/ - https://web.archive.org/web/20231221193106/https://www.swascan.com/cactus-ransomware-malware-analysis/ - https://taiwan.postsen.com/business/88601/Hamas-hackers-use-data-destruction-software-BiBi-which-consumes-a-lot-of-processor-resources-to-wipe-Windows-computer-data--iThome.html author: Luc Génaux date: 2023-11-28 modified: 2026-07-28 tags: - attack.impact - attack.defense-impairment - attack.t1486 - attack.t1685 logsource: category: image_load product: windows detection: selection: - ImageLoaded|endswith: \RstrtMgr.dll - OriginalFileName: RstrtMgr.dll filter_main_generic: Image|startswith: - C:\$WINDOWS.~BT\ - C:\$WinREAgent\ - C:\Program Files (x86)\ - C:\Program Files\ - C:\ProgramData\ - C:\Windows\explorer.exe - C:\Windows\SoftwareDistribution\ - C:\Windows\SysNative\ - C:\Windows\System32\ - C:\Windows\SysWOW64\ - C:\Windows\WinSxS\ - C:\WUDownloadCache\ filter_main_user_software_installations: Image|startswith: C:\Users\ Image|contains|all: - \AppData\Local\Temp\is- - .tmp\ Image|endswith: .tmp filter_main_admin_software_installations: Image|startswith: C:\Windows\Temp\ filter_optional_onedrive_1: Image|startswith: C:\Users\ Image|endswith: - \AppData\Local\Microsoft\OneDrive\OneDrive.exe - \AppData\Local\Microsoft\OneDrive\OneDriveStandaloneUpdater.exe filter_optional_onedrive_2: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\OneDrive\ Image|endswith: \OneDrive.Sync.Service.exe condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Other legitimate Windows processes not currently listed - Processes related to software installation level: low
Near-miss passage: Sigma rule: Detects Certify a tool for Active Directory certificate abuse based on PE metadata characteristics and common command li. Logsource: windows / process_creation. Rule: title: HackTool - Certify Execution id: 762f2482-ff21-4970-8939-0aa317a886bb status: test description: Detects Certify a tool for Active Directory certificate abuse based on PE metadata characteristics and common command line arguments. references: - https://github.com/GhostPack/Certify author: pH-T (Nextron Systems) date: 2023-04-17 modified: 2023-04-25 tags: - attack.discovery - attack.credential-access - attack.t1649 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \Certify.exe - OriginalFileName: Certify.exe - Description|contains: Certify selection_cli_commands: CommandLine|contains: - '.exe cas ' - '.exe find ' - '.exe pkiobjects ' - '.exe request ' - '.exe download ' selection_cli_options: CommandLine|contains: - ' /vulnerable' - ' /template:' - ' /altname:' - ' /domain:' - ' /path:' - ' /ca:' condition: selection_img or all of selection_cli_* falsepositives: - Unknown level: high