Query: detect Detects suspicious script execution from suspicious directories or folders accessible by environment variables that may in logs
Matching passage: Sigma rule: Detects suspicious script execution from suspicious directories or folders accessible by environment variables that may. Logsource: windows / process_creation. Rule: title: Script Interpreter Execution From Suspicious Folder id: 1228c958-e64e-4e71-92ad-7d429f4138ba status: test description: 'Detects suspicious script execution from suspicious directories or folders accessible by environment variables that may indicate malware activity. Script interpreters (cscript, wscript, mshta, powershell) executing from folders like Temp, Public, or user profile directories may suggest attempts to evade detection or execute malicious scripts. ' references: - https://www.virustotal.com/gui/file/91ba814a86ddedc7a9d546e26f912c541205b47a853d227756ab1334ade92c3f - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/shuckworm-russia-ukraine-military - https://learn.microsoft.com/en-us/windows/win32/shell/csidl author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems) date: 2022-02-08 modified: 2026-02-17 tags: - attack.execution - attack.t1059 logsource: category: process_creation product: windows detection: selection_proc_image: Image|endswith: - \cscript.exe - \mshta.exe - \wscript.exe selection_proc_flags: CommandLine|contains: - ' -ep bypass ' - ' -ExecutionPolicy bypass ' - ' -w hidden ' - '/e:javascript ' - '/e:Jscript ' - '/e:vbscript ' selection_proc_original: OriginalFileName: - cscript.exe - mshta.exe - wscript.exe selection_folders_1: CommandLine|contains: - :\Perflogs\ - :\Users\Public\ - \%Public% - \AppData\Local\Temp - \AppData\Roaming\Temp - \Temporary Internet - \Windows\Temp - \Start Menu\Programs\Startup\ - '%TEMP%' - '%TMP%' - '%LocalAppData%\Temp' selection_folders_2: - CommandLine|contains|all: - :\Users\ - \Favorites\ - CommandLine|contains|all: - :\Users\ - \Favourites\ - CommandLine|contains|all: - :\Users\ - \Contacts\ - CommandLine|contains|all: - :\Users\ - \Documents\ - CommandLine|contains|all: - :\Users\ - \Music\ - CommandLine|contains|all: - :\Users\ - \Pictures\ - CommandLine|contains|all: - :\Users\ - \Videos\ filter_optional_chocolatey_installer: ParentImage: - C:\Windows\System32\Msiexec.exe - C:\Windows\SysWOW64\Msiexec.exe Image|endswith: \powershell.exe CommandLine|contains|all: - -NoProfile -ExecutionPolicy Bypass -Command - AppData\Local\Temp\ - Install-Chocolatey.ps1 condition: 1 of selection_proc_* and 1 of selection_folders_* and not 1 of filter_optional_* falsepositives: - Various legitimate software have been observed to use similar techniques for installation or update purposes;thus, it is recommended to review and tune filters for your environme
Near-miss passage: Sigma rule: Detects a potential remote threat creation with certain characteristics which are typical for Cobalt Strike beacons. Logsource: windows / create_remote_thread. Rule: title: HackTool - Potential CobaltStrike Process Injection id: 6309645e-122d-4c5b-bb2b-22e4f9c2fa42 status: test description: Detects a potential remote threat creation with certain characteristics which are typical for Cobalt Strike beacons references: - https://medium.com/@olafhartong/cobalt-strike-remote-threads-detection-206372d11d0f - https://blog.cobaltstrike.com/2018/04/09/cobalt-strike-3-11-the-snake-that-eats-its-tail/ author: Olaf Hartong, Florian Roth (Nextron Systems), Aleksey Potapov, oscd.community date: 2018-11-30 modified: 2023-05-05 tags: - attack.privilege-escalation - attack.stealth - attack.t1055.001 logsource: product: windows category: create_remote_thread detection: selection: StartAddress|endswith: - 0B80 - 0C7C - 0C88 condition: selection falsepositives: - Unknown level: high