Sigma Rule Library

Wannacry Killswitch Domain

Detects wannacry killswitch domain dns queries

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Detection logic

selection

query:
  - ifferfsodp9ifjaposdfjhgosurijfaewrwergwea.testing
  - ifferfsodp9ifjaposdfjhgosurijfaewrwergwea.test
  - ifferfsodp9ifjaposdfjhgosurijfaewrwergwea.com
  - ayylmaotjhsstasdfasdfasdfasdfasdfasdfasdf.com
  - iuqssfsodp9ifjaposdfjhgosurijfaewrwergwea.com

Condition

selection

Raw YAML

title: Wannacry Killswitch Domain
id: 3eaf6218-3bed-4d8a-8707-274096f12a18
status: test
description: Detects wannacry killswitch domain dns queries
references:
    - https://www.mandiant.com/resources/blog/wannacry-ransomware-campaign
author: Mike Wade
date: 2020-09-16
modified: 2022-03-24
tags:
    - attack.command-and-control
    - attack.t1071.001
logsource:
    category: dns
detection:
    selection:
        query:
            - 'ifferfsodp9ifjaposdfjhgosurijfaewrwergwea.testing'
            - 'ifferfsodp9ifjaposdfjhgosurijfaewrwergwea.test'
            - 'ifferfsodp9ifjaposdfjhgosurijfaewrwergwea.com'
            - 'ayylmaotjhsstasdfasdfasdfasdfasdfasdfasdf.com'
            - 'iuqssfsodp9ifjaposdfjhgosurijfaewrwergwea.com'
    condition: selection
falsepositives:
    - Analyst testing
level: high

False positives

  • Analyst testing

References

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