CmdID

CmdID / Rules / Windows

JScript Compiler Execution

A Sigma rule for process creation on Windows, by frack113.

low 1 ATT&CK technique 1 program it names

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection:
    - Image|endswith: '\jsc.exe'
    - OriginalFileName: 'jsc.exe'
  condition: 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 frack113, 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 jsc.exe trip it: each is on its program’s page, read by CmdID.

Programs and files it names

their pages here
jsc.exe

ATT&CK

the techniques it is tagged with
T1127Trusted Developer Utilities Proxy Execution

Other rules for T1127 Trusted Developer Utilities Proxy Execution

AspNetCompiler Execution · Suspicious Child Process of AspNetCompiler · Potentially Suspicious ASP.NET Compilation Via AspNetCompiler · Suspicious Use of CSharp Interactive Console · C# IL Code Compilation Via Ilasm.EXE · Kavremover Dropped Binary LOLBIN Usage · Use of Remote.exe · Use of TTDInject.exe · Use of VSIISExeLauncher.exe · Use of Wfc.exe · Microsoft Workflow Compiler Execution · Potential Arbitrary Code Execution Via Node.EXE