
title: WannaCry Ransomware
author: Florian Roth (rule), Tom U. @c_APT_ure (collection), oscd.community, Jonhnathan
  Ribeiro
date: 2019/01/16
description: Detects WannaCry ransomware activity
detection:
  SELECTION_1:
    EventID: 1
  SELECTION_10:
    CommandLine: '*bcdedit*'
  SELECTION_11:
    CommandLine: '*/set*'
  SELECTION_12:
    CommandLine: '*{default}*'
  SELECTION_13:
    CommandLine: '*recoveryenabled*'
  SELECTION_14:
    CommandLine: '*no*'
  SELECTION_15:
    CommandLine: '*wbadmin*'
  SELECTION_16:
    CommandLine: '*delete*'
  SELECTION_17:
    CommandLine: '*catalog*'
  SELECTION_18:
    CommandLine: '*-quiet*'
  SELECTION_19:
    CommandLine: '*@Please_Read_Me@.txt*'
  SELECTION_2:
    Image:
    - '*\tasksche.exe'
    - '*\mssecsvc.exe'
    - '*\taskdl.exe'
    - '*\taskhsvc.exe'
    - '*\taskse.exe'
    - '*\111.exe'
    - '*\lhdfrgui.exe'
    - '*\diskpart.exe'
    - '*\linuxnew.exe'
    - '*\wannacry.exe'
  SELECTION_3:
    Image: '*WanaDecryptor*'
  SELECTION_4:
    CommandLine: '*icacls*'
  SELECTION_5:
    CommandLine: '*/grant*'
  SELECTION_6:
    CommandLine: '*Everyone:F*'
  SELECTION_7:
    CommandLine: '*/T*'
  SELECTION_8:
    CommandLine: '*/C*'
  SELECTION_9:
    CommandLine: '*/Q*'
  condition: (SELECTION_1 and (SELECTION_2 or SELECTION_3 or (SELECTION_4 and SELECTION_5
    and SELECTION_6 and SELECTION_7 and SELECTION_8 and SELECTION_9) or (SELECTION_10
    and SELECTION_11 and SELECTION_12 and SELECTION_13 and SELECTION_14) or (SELECTION_15
    and SELECTION_16 and SELECTION_17 and SELECTION_18) or SELECTION_19))
falsepositives:
- Diskpart.exe usage to manage partitions on the local hard drive
fields:
- CommandLine
- ParentCommandLine
id: 41d40bff-377a-43e2-8e1b-2e543069e079
level: critical
logsource:
  category: process_creation
  product: windows
modified: 2020/09/01
references:
- https://www.hybrid-analysis.com/sample/ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa?environmentId=100
status: experimental
tags:
- attack.lateral_movement
- attack.t1210
- attack.discovery
- attack.t1083
- attack.defense_evasion
- attack.t1222.001
- attack.t1222
- attack.impact
- attack.t1486
- attack.t1490
ruletype: SIGMA
