Sigma Rule Library

NotPetya Ransomware Activity

Detects NotPetya ransomware activity in which the extracted passwords are passed back to the main module via named pipe, the file system journal of drive C is deleted and Windows eventlogs are cleared using wevtutil

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Detection logic

selection_specific_pattern

CommandLine|contains:
  - "wevtutil cl Application & fsutil usn deletejournal /D C:"
  - dllhost.dat %WINDIR%\ransoms

selection_rundll32

Image|endswith: \rundll32.exe
CommandLine|endswith:
  - .dat,#1
  - ".dat #1"
  - .zip.dll",#1

selection_perfc_keyword

- \perfc.dat

Condition

1 of selection_*

Raw YAML

title: NotPetya Ransomware Activity
id: 79aeeb41-8156-4fac-a0cd-076495ab82a1
status: test
description: Detects NotPetya ransomware activity in which the extracted passwords are passed back to the main module via named pipe, the file system journal of drive C is deleted and Windows eventlogs are cleared using wevtutil
references:
    - https://securelist.com/schroedingers-petya/78870/
    - https://www.hybrid-analysis.com/sample/64b0b58a2c030c77fdb2b537b2fcc4af432bc55ffb36599a31d418c7c69e94b1?environmentId=100
author: Florian Roth (Nextron Systems), Tom Ueltschi
date: 2019-01-16
modified: 2022-12-15
tags:
    - attack.stealth
    - attack.defense-impairment
    - attack.t1218.011
    - attack.t1685.005
    - attack.credential-access
    - attack.t1003.001
    - car.2016-04-002
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection_specific_pattern:
        CommandLine|contains:
            - 'wevtutil cl Application & fsutil usn deletejournal /D C:'
            - 'dllhost.dat %WINDIR%\ransoms'
    selection_rundll32:
        Image|endswith: '\rundll32.exe'
        CommandLine|endswith:
            - '.dat,#1'
            - '.dat #1' # Sysmon removes comma
            - '.zip.dll",#1'
    selection_perfc_keyword:
        - '\perfc.dat'
    condition: 1 of selection_*
falsepositives:
    - Unknown
level: critical

False positives

  • Unknown

References

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