CmdID / Rules / Windows

Potential Exploitation Attempt Of Undocumented WindowsServer RCE

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

high 1 ATT&CK technique 1 program it names

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection:
    CommandLine|contains: '-k DHCPServer'
    Image|endswith: '\svchost.exe'
    ParentCommandLine|contains: '-k DHCPServer'
    ParentImage|endswith: '\svchost.exe'
    User|contains:
      - 'NETWORK SERVICE'
      - 'NETZWERKDIENST'
      - 'SERVIZIO DI RETE'
      - 'SERVICIO DE RED'
  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 Florian Roth (Nextron Systems), Nasreddine Bencherchali, 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.

Programs and files it names

their pages here

svchost.exe

ATT&CK

the techniques it is tagged with

T1190Exploit Public-Facing Application

Potential Exploitation Attempt Of Undocumented WindowsServer RCE

What it looks for

Programs and files it names

ATT&CK

Other rules for T1190 Exploit Public-Facing Application