CmdID

CmdID / Rules / Windows

Potential EmpireMonkey Activity

A Sigma rule for process creation on Windows, from SigmaHQ’s emerging threats rules, by Markus Neis, Nasreddine Bencherchali (Nextron Systems).

high 1 ATT&CK technique

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection:
    CommandLine|contains|all:
      - '/e:jscript'
      - '\Local\Temp\Errors.bat'
  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 Markus Neis, Nasreddine Bencherchali (Nextron Systems), 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.

None of the everyday examples and documented commands on CmdID’s program pages trips it. To see whether a command line does, paste it into CmdID.

ATT&CK

the techniques it is tagged with
T1218.010System Binary Proxy Execution: Regsvr32

Other rules for T1218.010 System Binary Proxy Execution: Regsvr32

Potential APT-C-12 BlueMushroom DLL Load Activity Via Regsvr32 · Potential Regsvr32 Commandline Flag Anomaly · Potentially Suspicious Regsvr32 HTTP IP Pattern · Potentially Suspicious Regsvr32 HTTP/FTP Pattern · Suspicious Regsvr32 Execution From Remote Share · Potentially Suspicious Child Process Of Regsvr32 · Regsvr32 Execution From Potential Suspicious Location · Regsvr32 Execution From Highly Suspicious Location · Regsvr32 DLL Execution With Suspicious File Extension · Scripting/CommandLine Process Spawned Regsvr32