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.
8,385 rules
AWS CloudTrail: Suspicious STS AssumeRole sessions from Role-issued principals
Alert on CloudTrail AssumeRole events initiated from an already assumed role session.
Austin Songer @austinsonger, Huntrule TeamAwscloudtrailLow237Free2021-07-24AWS CloudTrail S3 Bucket/Replication Configuration Tampering via Management API Calls
Flags CloudTrail S3 management API actions that modify bucket protections or move/restore objects.
Austin Songer @austinsonger, Huntrule TeamAwscloudtrailLow311Free2021-07-24AWS ElastiCache Cache Security Group Modified or Deleted via CloudTrail
Flags CloudTrail activity indicating an ElastiCache security group was modified or deleted.
Austin Songer @austinsonger, Huntrule TeamAwscloudtrailLow457Free2021-07-24AWS CloudTrail: ElastiCache Cache Security Group Created
Flags CloudTrail events indicating a new ElastiCache cache security group was created.
Austin Songer @austinsonger, Huntrule TeamAwscloudtrailLow222Free2021-07-24Windows File Writes of HiveNightmare-Style SAM Export Artifacts
Identifies Windows SAM export files written with HiveNightmare-style filename patterns in file events.
Florian Roth (Nextron Systems), Huntrule TeamWindowsfile_eventHigh468Free2021-07-23Windows Registry Changes Enabling DNS-over-HTTPS via Edge, Chrome, or Firefox Policies
Alerts on registry policy updates that enable DNS-over-HTTPS for Edge, Chrome, or Firefox on Windows.
Austin Songer, Huntrule TeamWindowsregistry_setMedium212Free2021-07-22AWS Route 53 Domain Transfer to Another Account via TransferDomainToAnotherAwsAccount
Alerts on Route 53 domain transfer requests in CloudTrail when a domain is moved to another AWS account.
Elastic, Austin Songer @austinsonger, Huntrule TeamAwscloudtrailLow221Free2021-07-22AWS Route 53 Domain Transfer Lock Disabled via CloudTrail
Alerts when Route 53 domain transfer protection is removed through DisableDomainTransferLock events in CloudTrail.
Elastic, Austin Songer @austinsonger, Huntrule TeamAwscloudtrailLow4610Free2021-07-22Windows Process Creation: Netcat (ncat/cat) Suspicious Execution
Alerts on Windows process launches of Netcat-like binaries with typical listener/proxy or remote execution command-line flags.
frack113, Florian Roth (Nextron Systems), Huntrule TeamWindowsprocess_creationHigh446Free2021-07-21Windows PowerShell Script Block Local Email Collection via Outlook COM Automation
Flags PowerShell script block text referencing Outlook COM automation used to collect locally stored email.
frack113, Huntrule TeamWindowsps_scriptMedium459Free2021-07-21PowerShell command line containing powercat invocation on Windows
Alerts when classic PowerShell starts with Powercat-related command-line strings ('powercat ' or 'powercat.ps1').
frack113, Huntrule TeamWindowsps_classic_startMedium3710Free2021-07-21Windows Private Key File Recon via cmd.exe, PowerShell, or findstr.exe
Flags Windows command-line searches for key/certificate file extensions using cmd.exe, PowerShell, or findstr.
frack113, Nasreddine Bencherchali (Nextron Systems), Huntrule TeamWindowsprocess_creationMedium303Free2021-07-20PowerShell Compress-Archive Creates Archive in Temp or System Temp Paths
Flags PowerShell Compress-Archive usage writing archives to %TEMP%, AppData Local Temp, or Windows Temp.
Nasreddine Bencherchali (Nextron Systems), frack113, Huntrule TeamWindowsprocess_creationMedium231Free2021-07-20PowerShell: Compress-Archive to TEMP/AppData/Windows Temp for Staging
Flags PowerShell scripts compressing data with Compress-Archive into $env:TEMP or Temp folders.
Nasreddine Bencherchali (Nextron Systems), frack113, Huntrule TeamWindowsps_scriptMedium263Free2021-07-20Windows PowerShell module usage: Compress-Archive to store archives in Temp locations
Alerts on PowerShell Compress-Archive output written to common temp staging directories.
Nasreddine Bencherchali (Nextron Systems), frack113, Huntrule TeamWindowsps_moduleMedium151Free2021-07-20