Detection rules › Sigma

Winnti Pipemon Characteristics

Status
stable
Severity
critical
Log source
product windows, category process_creation
Author
Florian Roth (Nextron Systems), oscd.community
Source
github.com/SigmaHQ/sigma

Detects specific process characteristics of Winnti Pipemon malware reported by ESET

MITRE ATT&CK coverage

Event coverage

Rule body yaml

title: Winnti Pipemon Characteristics
id: 73d70463-75c9-4258-92c6-17500fe972f2
status: stable
description: Detects specific process characteristics of Winnti Pipemon malware reported by ESET
references:
    - https://www.welivesecurity.com/2020/05/21/no-game-over-winnti-group/
author: Florian Roth (Nextron Systems), oscd.community
date: 2020-07-30
modified: 2021-11-27
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.execution
    - attack.stealth
    - attack.t1574.001
    - attack.g0044
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection_1:
        CommandLine|contains: 'setup0.exe -p'
    selection_2:
        CommandLine|contains: 'setup.exe'
        CommandLine|endswith:
            - '-x:0'
            - '-x:1'
            - '-x:2'
    condition: 1 of selection_*
falsepositives:
    - Legitimate setups that use similar flags
level: critical

Stages and Predicates

Stage 0: condition

1 of selection_*

Stage 1: selection_1

selection_1:
    CommandLine|contains: 'setup0.exe -p'

Stage 2: selection_2

selection_2:
    CommandLine|contains: 'setup.exe'
    CommandLine|endswith:
        - '-x:0'
        - '-x:1'
        - '-x:2'

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
CommandLineends_with
  • -x:0
  • -x:1
  • -x:2
CommandLinematch
  • setup.exe
  • setup0.exe -p