Query: write Sigma for Detects execution of EDR-Freeze, a tool that exploits the MiniDumpWriteDump function and WerFaultSecure.exe to suspend E
Matching 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
Near-miss passage: Sigma rule: Detects modifications to shell open registry keys that point to suspicious locations typically used by malware for persi. Logsource: windows / registry_set. Rule: title: Suspicious Shell Open Command Registry Modification id: 9e8894c0-0ae0-11ef-9d85-1f2942bec57c status: experimental description: 'Detects modifications to shell open registry keys that point to suspicious locations typically used by malware for persistence. Generally, modifications to the `*\shell\open\command` registry key can indicate an attempt to change the default action for opening files, and various UAC bypass or persistence techniques involve modifying these keys to execute malicious scripts or binaries. ' references: - https://www.trendmicro.com/en_us/research/25/f/water-curse.html author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2026-01-24 tags: - attack.privilege-escalation - attack.persistence - attack.t1548.002 - attack.t1546.001 logsource: category: registry_set product: windows detection: selection: TargetObject|contains: \shell\open\command\ Details|contains: - \$Recycle.Bin\ - \AppData\Local\Temp\ - \Contacts\ - \Music\ - \PerfLogs\ - \Photos\ - \Pictures\ - \Users\Public\ - \Videos\ - \Windows\Temp\ - '%AppData%' - '%LocalAppData%' - '%Temp%' - '%tmp%' condition: selection falsepositives: - Legitimate software installations or updates that modify the shell open command registry keys to these locations. level: medium