Query: alert when Detects the execution of Winrs.exe where it is used to execute commands locally. Commands executed this way are launched
Matching passage: Sigma rule: Detects the execution of Winrs.exe where it is used to execute commands locally. Commands executed this way are launched. Logsource: windows / process_creation. Rule: title: Winrs Local Command Execution id: bcfece3d-56fe-4545-9931-3b8e92927db1 status: experimental description: 'Detects the execution of Winrs.exe where it is used to execute commands locally. Commands executed this way are launched under Winrshost.exe and can represent proxy execution used for defense evasion or lateral movement. ' references: - https://cardinalops.com/blog/living-off-winrm-abusing-complexity-in-remote-management/ - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/winrs author: Liran Ravich, Nasreddine Bencherchali date: 2025-10-22 tags: - attack.lateral-movement - attack.stealth - attack.t1021.006 - attack.t1218 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \winrs.exe - OriginalFileName: winrs.exe selection_local_ip: CommandLine|contains|windash: - /r:localhost - /r:127.0.0.1 - /r:[::1] - /remote:localhost - /remote:127.0.0.1 - /remote:[::1] filter_main_remote: CommandLine|contains|windash: - '/r:' - '/remote:' condition: all of selection_* or (selection_img and not 1 of filter_main_*) falsepositives: - Unlikely level: high
Near-miss passage: Sigma rule: Detects execution of EDR-Freeze, a tool that exploits the MiniDumpWriteDump function and WerFaultSecure.exe to suspend E. Logsource: windows / process_creation. Rule: title: Hacktool - EDR-Freeze Execution id: c598cc0c-9e70-4852-b9eb-8921af79f598 status: experimental description: 'Detects execution of EDR-Freeze, a tool that exploits the MiniDumpWriteDump function and WerFaultSecure.exe to suspend EDR and Antivirus processes on Windows. EDR-Freeze leverages a race-condition attack to put security processes into a dormant state by suspending WerFaultSecure at the moment it freezes the target process. This technique does not require kernel-level exploits or BYOVD, but instead abuses user-mode functionality to temporarily disable monitoring by EDR or Antimalware solutions. ' references: - https://www.zerosalarium.com/2025/09/EDR-Freeze-Puts-EDRs-Antivirus-Into-Coma.html - https://github.com/TwoSevenOneT/EDR-Freeze author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-09-24 modified: 2025-11-27 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_img: Image|contains: - \EDR-Freeze - \EDRFreeze Image|endswith: .exe selection_imphash: Hashes|contains: - IMPHASH=1195F7935954A2CD09157390C33F8E8C - IMPHASH=129F58DE3D687FB7F012BF6C3D679997 - IMPHASH=2C617A175D0086251642C6619F7CC8BA - IMPHASH=8828F0B906F7844358FB92A899E9520F - IMPHASH=AF76D95157EC554DC1EF178E4E66D447 - IMPHASH=E1B04316B61ACA31DD52ABBEC0A37FD5 - IMPHASH=8B2D5B54AFCFEC60D54F6B31D80ED4A0 - IMPHASH=AB8BB31EDD91D2A05FE7B62A535E9EB7 condition: 1 of selection_* falsepositives: - Unlikely level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_hktl_edr_freeze/info.yml