Detection rules › Sigma

Potential ACTINIUM Persistence Activity

Status
test
Severity
high
Log source
product windows, category process_creation
Author
Andreas Hunkeler (@Karneades)
Source
github.com/SigmaHQ/sigma

Detects specific process parameters as used by ACTINIUM scheduled task persistence creation.

MITRE ATT&CK coverage

Event coverage

Rule body yaml

title: Potential ACTINIUM Persistence Activity
id: e1118a8f-82f5-44b3-bb6b-8a284e5df602
status: test
description: Detects specific process parameters as used by ACTINIUM scheduled task persistence creation.
references:
    - https://www.microsoft.com/security/blog/2022/02/04/actinium-targets-ukrainian-organizations
author: Andreas Hunkeler (@Karneades)
date: 2022-02-07
modified: 2023-03-18
tags:
    - attack.privilege-escalation
    - attack.execution
    - attack.persistence
    - attack.t1053
    - attack.t1053.005
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'schtasks'
            - 'create'
            - 'wscript'
            - ' /e:vbscript'
    condition: selection
falsepositives:
    - Unlikely
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    CommandLine|contains|all:
        - 'schtasks'
        - 'create'
        - 'wscript'
        - ' /e:vbscript'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
CommandLinematch
  • /e:vbscript
  • create corpus 24 (sigma 17, splunk 7)
  • schtasks corpus 6 (sigma 5, kusto 1)
  • wscript corpus 16 (sigma 16)