Potential Ursnif Malware Activity - Registry

 1title: Potential Ursnif Malware Activity - Registry
 2id: 21f17060-b282-4249-ade0-589ea3591558
 3status: test
 4description: Detects registry keys related to Ursnif malware.
 5references:
 6    - https://blog.yoroi.company/research/ursnif-long-live-the-steganography/
 7    - https://blog.trendmicro.com/trendlabs-security-intelligence/phishing-campaign-uses-hijacked-emails-to-deliver-ursnif-by-replying-to-ongoing-threads/
 8author: megan201296
 9date: 2019-02-13
10modified: 2023-02-07
11tags:
12    - attack.persistence
13    - attack.defense-evasion
14    - attack.execution
15    - attack.t1112
16    - detection.emerging-threats
17logsource:
18    product: windows
19    category: registry_add
20detection:
21    selection:
22        EventType: CreateKey
23        TargetObject|contains: '\Software\AppDataLow\Software\Microsoft\'
24    filter:
25        TargetObject|contains:
26            - '\SOFTWARE\AppDataLow\Software\Microsoft\Internet Explorer\'
27            - '\SOFTWARE\AppDataLow\Software\Microsoft\RepService\'
28            - '\SOFTWARE\AppDataLow\Software\Microsoft\IME\'
29            - '\SOFTWARE\AppDataLow\Software\Microsoft\Edge\'
30    condition: selection and not filter
31falsepositives:
32    - Unknown
33level: high

References

• https://blog.yoroi.company/research/ursnif-long-live-the-steganography/

  
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• Phishing Campaign uses Hijacked Emails to Send URSNIF

  

  A spam campaign we observed in September indicates attackers are angling towards a more sophisticated form of phishing. The campaign uses hijacked email accounts to deliver URSNIF as part of or as a response to an existing email thread.

  
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