CmdID

CmdID / Rules / Windows

Run Once Task Execution as Configured in Registry

A Sigma rule for process creation on Windows, by Avneet Singh @v3t0_, oscd.community, Christopher Peacock @SecurePeacock (updated).

low 1 ATT&CK technique 1 program it names

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection_cli:
    - CommandLine|contains: '/AlternateShellStartup'
    - CommandLine|endswith: '/r'
  selection_img:
    - Image|endswith: '\runonce.exe'
    - Description: 'Run Once Wrapper'
  condition: all of selection_*

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Avneet Singh @v3t0_, oscd.community, Christopher Peacock @SecurePeacock (updated), under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

Command lines that trip it

documented abuse, read by CmdID

The commands LOLBAS or GTFOBins documents for runonce.exe trip it: each is on its program’s page, read by CmdID.

Programs and files it names

their pages here
runonce.exe

ATT&CK

the techniques it is tagged with
T1112Modify Registry

Other rules for T1112 Modify Registry

New DNS ServerLevelPluginDll Installed Via Dnscmd.EXE · Security Event Logging Disabled via MiniNt Registry Key - Process · Potentially Suspicious Desktop Background Change Using Reg.EXE · Potential Suspicious Registry File Imported Via Reg.EXE · Registry Tampering Of Internal Tools Settings · RestrictedAdminMode Registry Value Tampering - ProcCreation · Enable LM Hash Storage - ProcCreation · Reg Add Suspicious Paths · Imports Registry Key From a File · Imports Registry Key From an ADS · Suspicious Registry Modification From ADS Via Regini.EXE · Registry Modification Via Regini.EXE