title: WannaCry Ransomware
id: 41d40bff-377a-43e2-8e1b-2e543069e079
status: test
description: Detects WannaCry ransomware activity
author: Florian Roth (rule), Tom U. @c_APT_ure (collection), oscd.community, Jonhnathan Ribeiro
references:
  - https://www.hybrid-analysis.com/sample/ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa?environmentId=100
date: 2019/01/16
modified: 2022/02/24
logsource:
  category: process_creation
  product: windows
detection:
  selection1:
    - Image|endswith:
      - '\tasksche.exe'
      - '\mssecsvc.exe'
      - '\taskdl.exe'
      - '\taskhsvc.exe'
      - '\taskse.exe'
      - '\111.exe'
      - '\lhdfrgui.exe'
      # - '\diskpart.exe'  # cannot be used in a rule of level critical
      - '\linuxnew.exe'
      - '\wannacry.exe'
    - Image|contains: 'WanaDecryptor'
  selection2:
    - CommandLine|contains|all:
      - 'icacls'
      - '/grant'
      - 'Everyone:F'
      - '/T'
      - '/C'
      - '/Q'
    - CommandLine|contains|all:
      - 'bcdedit'
      - '/set'
      - '{default}'
      - 'recoveryenabled'
      - 'no'
    - CommandLine|contains|all:
      - 'wbadmin'
      - 'delete'
      - 'catalog'
      - '-quiet'
    - CommandLine|contains: '@Please_Read_Me@.txt'
  condition: 1 of selection*
fields:
  - CommandLine
  - ParentCommandLine
falsepositives:
  - Unknown
level: critical
tags:
  - attack.lateral_movement
  - attack.t1210
  - attack.discovery
  - attack.t1083
  - attack.defense_evasion
  - attack.t1222.001
  - attack.impact
  - attack.t1486
  - attack.t1490
