CmdID

CmdID / Rules / Linux

Authencesn Crypto Module Load via Modprobe - Copy-Fail Indicator

A Sigma rule for process creation on Linux, from SigmaHQ’s emerging threats rules, by Gene Kazimiarovich.

high 2 ATT&CK techniques 2 programs it names

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection_kmod:
    CommandLine|contains|all:
      - 'modprobe'
      - 'crypto-authencesn('
    Image|endswith: '/kmod'
  selection_modprobe:
    CommandLine|contains: 'crypto-authencesn('
    Image|endswith: '/modprobe'
  condition: 1 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 Gene Kazimiarovich, 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
kmodmodprobe

ATT&CK

the techniques it is tagged with
T1068Exploitation for Privilege Escalation
T1547.006Boot or Logon Autostart Execution: Kernel Modules and Extensions

Other rules for T1068 Exploitation for Privilege Escalation

Linux Sudo Chroot Execution · Sudo Privilege Escalation CVE-2019-14287 · OMIGOD SCX RunAsProvider ExecuteScript · 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