Query: detect Detects the load of RstrtMgr DLL (Restart Manager) by a suspicious process. This library has been used during ransomware in logs
Matching passage: Sigma rule: Detects the load of RstrtMgr DLL (Restart Manager) by a suspicious process. This library has been used during ransomware. Logsource: windows / image_load. Rule: title: Load Of RstrtMgr.DLL By A Suspicious Process id: b48492dc-c5ef-4572-8dff-32bc241c15c8 related: - id: 3669afd2-9891-4534-a626-e5cf03810a61 type: derived status: test description: 'Detects the load of RstrtMgr DLL (Restart Manager) by a suspicious 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 tags: - attack.impact - attack.defense-impairment - attack.t1486 - attack.t1685 logsource: category: image_load product: windows detection: selection_img: - ImageLoaded|endswith: \RstrtMgr.dll - OriginalFileName: RstrtMgr.dll selection_folders_1: Image|contains: - :\Perflogs\ - :\Users\Public\ - \Temporary Internet selection_folders_2: - Image|contains|all: - :\Users\ - \Favorites\ - Image|contains|all: - :\Users\ - \Favourites\ - Image|contains|all: - :\Users\ - \Contacts\ condition: selection_img and 1 of selection_folders_* falsepositives: - Processes related to software installation level: high
Near-miss passage: Sigma rule: Detects execution of commands that leverage the "mshtml.dll" RunHTMLApplication export to run arbitrary code via differe. Logsource: windows / process_creation. Rule: title: Mshtml.DLL RunHTMLApplication Suspicious Usage id: 4782eb5a-a513-4523-a0ac-f3082b26ac5c related: - id: 9f06447a-a33a-4cbe-a94f-a3f43184a7a3 type: obsolete - id: 73fcad2e-ff14-4c38-b11d-4172c8ac86c7 type: obsolete status: test description: 'Detects execution of commands that leverage the "mshtml.dll" RunHTMLApplication export to run arbitrary code via different protocol handlers (vbscript, javascript, file, http...) ' references: - https://twitter.com/n1nj4sec/status/1421190238081277959 - https://hyp3rlinx.altervista.org/advisories/MICROSOFT_WINDOWS_DEFENDER_TROJAN.WIN32.POWESSERE.G_MITIGATION_BYPASS_PART2.txt - http://hyp3rlinx.altervista.org/advisories/MICROSOFT_WINDOWS_DEFENDER_DETECTION_BYPASS.txt author: Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems), Josh Nickels, frack113, Zaw Min Htun (ZETA) date: 2022-08-14 modified: 2024-02-23 tags: - attack.execution - attack.stealth logsource: category: process_creation product: windows detection: selection: CommandLine|contains|all: - \..\ - mshtml CommandLine|contains: - '#135' - RunHTMLApplication condition: selection falsepositives: - Unlikely level: high