Sigma detection rules, expert-reviewed

Linux cron: Suspicious crontab modification with REPLACE

Alerts on Linux cron activity indicating crontab changes containing the keyword "REPLACE".

Windows Registry: Delete SD Value Under Schedule\TaskCache\Tree to Impair Scheduled Task Visibility

Detects deletion of the SD registry value under Schedule\TaskCache\Tree, which can impair scheduled task visibility.

Windows schtasks.exe scheduled task creation from suspicious folders

Alerts on schtasks.exe /create using PowerShell/cmd and suspicious folder paths like ProgramData.

Windows Network Connections Initiated by Eqnedt32.EXE

Identifies outbound network connections started by eqnedt32.exe on Windows.

Windows RPCSS svchost (-k RPCSS) Process Spawn Anomaly (Potential CVE-2022-26809)

Alerts on svchost.exe running RPCSS spawning anomalous child processes indicative of potential RPC abuse.

Windows File Creation: PowerShell webAdministration Module Path Used in CVE-2022-24527 LPE

Flags Windows file events creating webAdministration.psm1 under PowerShell modules, consistent with CVE-2022-24527 LPE behavior.

PowerShell Hyper-V Cmdlets Execution via Script Blocks (New-VM, Set-VMFirmware, Start-VM)

Alerts when PowerShell script blocks use Hyper-V VM creation or start cmdlets (New-VM, Set-VMFirmware, Start-VM).

Windows File Access to Browser Credential Stores by Uncommon Processes

Detects suspicious process access to Firefox/Chromium credential store files on Windows, excluding common system and known benign paths.

Windows Credential Manager Enumeration via VaultCmd.exe /listcreds

Flags VaultCmd.exe executions that enumerate saved Windows Credential Manager entries using /listcreds.

Windows Process Creation: SQLite Access to Firefox Profile Databases

Alerts when Windows runs SQLite tooling to query Firefox profile DBs like cookies.sqlite or places.sqlite.

Windows Task Scheduler persistence using svchost-launched PowerShell with hidden/Bypass flags

Alerts on svchost.exe Schedule tasks spawning PowerShell with hidden window and execution policy bypass flags.

Windows PowerShell execution from C:\Users\Public

Flags PowerShell command lines that reference C:\Users\Public, indicating likely script execution from a common public staging area.

Windows Process Creation: Node.js Executions from Adobe Creative Cloud

Flags Windows executions of Adobe Creative Cloud’s bundled node.exe, excluding typical JS resource paths.

Windows: Detect Suspicious DumpMinitool.exe Execution via Process Command-Line

Alerts on suspicious command-line usage of DumpMinitool.exe on Windows, leveraging process creation Image, OriginalFileName, and command-line text.

Windows: Detect DumpMinitool.exe Execution for Process Memory Dumping

Identifies Windows executions of DumpMinitool.exe variants with dump options via process creation telemetry.