CmdID

CmdID / Rules / Linux

OMIGOD SCX RunAsProvider ExecuteScript

A Sigma rule for process creation on Linux, by Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC.

high 3 ATT&CK techniques

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection:
    CommandLine|contains: '/etc/opt/microsoft/scx/conf/tmpdir/scx'
    CurrentDirectory: '/var/opt/microsoft/scx/tmp'
    LogonId: '0'
    User: 'root'
  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 Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC, 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
T1068Exploitation for Privilege Escalation
T1190Exploit Public-Facing Application
T1203Exploitation for Client Execution

Other rules for T1068 Exploitation for Privilege Escalation

Linux Sudo Chroot Execution · Sudo Privilege Escalation CVE-2019-14287 · Authencesn Crypto Module Load via Modprobe - Copy-Fail Indicator · OMIGOD SCX RunAsProvider ExecuteShellCommand · Exploiting CVE-2019-1388 · Potential CVE-2021-41379 Exploitation Attempt · Suspicious Sysmon as Execution Parent · Potential SystemNightmare Exploitation Attempt · HKTL - SharpSuccessor Privilege Escalation Tool Execution · HackTool - SysmonEOP Execution · Suspicious Spool Service Child Process