Sigma detection rules, expert-reviewed
Each one is checked against the reporting it came from before it is published, and shows the ATT&CK technique it covers, the telemetry it needs and where it falls short.
3,626 rules
M365 Exchange Add-FederatedDomain Success: New Federated Domain Created
Alerts on successful Exchange addition of a new federated domain via Add-FederatedDomain.
Splunk Threat Research Team (original rule), '@ionsor (rule)', Huntrule TeamM365exchangeMedium162Free2022-02-08Azure Audit Logs: Successful Disable Strong Authentication Indicates MFA Disabled
Alerts on successful MFA disable actions in Azure audit logs that could weaken account authentication.
"@ionsor, Huntrule Team"AzureauditlogsMedium193Free2022-02-08Windows Process Command Line Network Recon via nslookup LDAP SRV Query
Identifies Windows command lines running nslookup with an LDAP SRV domain controller discovery query string.
Florian Roth (Nextron Systems), Huntrule TeamWindowsprocess_creationHigh243Free2022-02-07Windows Process Creation: Scheduled Task Creation via schtasks and wscript/vbscript
Alerts on Windows command lines that combine schtasks task creation with wscript running VBScript for persistence.
Andreas Hunkeler (@Karneades), Huntrule TeamWindowsprocess_creationHigh101Free2022-02-07Windows Process Creation: cmd.exe Launching with PowerShell in .lnk Link Command
Alerts when explorer launches cmd.exe with command lines containing both PowerShell and a .lnk reference.
frack113, Huntrule TeamWindowsprocess_creationMedium181Free2022-02-06Windows PowerShell: DSInternals Get-ADReplAccount Enumeration
Alerts on PowerShell execution of Get-ADReplAccount with -All and -Server parameters for AD replication account enumeration.
frack113, Huntrule TeamWindowsps_scriptMedium212Free2022-02-06Windows Registry ServiceDll Hijack via Service Parameters\ServiceDll
Alerts on ServiceDll value changes for Windows services in the registry, indicating potential DLL load persistence.
frack113, Huntrule TeamWindowsregistry_setMedium181Free2022-02-04Windows: attrib.exe Executed with +s to Mark Files as System Files
Flags attrib.exe executions that include the +s switch to mark target files as system files.
frack113, Huntrule TeamWindowsprocess_creationLow90Free2022-02-04Linux auditd: systemd service file creation under systemd directories
Identifies new systemd unit file creation events under common systemd directories using auditd PATH create logs.
Pawel Mazur, Huntrule TeamLinuxauditdMedium143Free2022-02-03Windows NTLM brute force targeting workstation/device names
Alerts on NTLM EventID 8004 when WorkstationName equals common spoofed client names used in brute force attempts.
Jerry Shockley '@jsh0x', Huntrule TeamWindowsntlmMedium405Free2022-02-02Windows PowerShell: Suspicious Unblock-File to Remove Zone.Identifier
Flags PowerShell use of Unblock-File (-Path) that can remove Zone.Identifier downloaded-file metadata.
frack113, Huntrule TeamWindowsps_scriptMedium5110Free2022-02-01PowerShell Mount-DiskImage with -ImagePath to Access Disk Images
Alerts on PowerShell script blocks calling Mount-DiskImage with -ImagePath, indicative of disk-image-based payload staging.
frack113, Huntrule TeamWindowsps_scriptLow382Free2022-02-01Windows PowerShell: Suspicious Invoke-Item After Mount-DiskImage
Flags PowerShell that mounts an image, derives a drive letter, then runs content via invoke-item from that mount.
frack113, Huntrule TeamWindowsps_scriptMedium100Free2022-02-01Windows Suspicious takeown.exe Recursive Ownership Change
Alerts when takeown.exe is run with recursive and file/folder targeting, indicating potential defense impairment via ownership changes.
frack113, Huntrule TeamWindowsprocess_creationMedium5110Free2022-01-30Windows PowerShell ScriptBlock Accessing Browser 'Login Data' Files
Flags PowerShell Copy-Item operations targeting browser Login Data credential database paths on Windows.
frack113, Huntrule TeamWindowsps_scriptMedium223Free2022-01-30