AdSearch Startup Folder Persistence File Creation (RedCanary Threat Detection Report)

 1title: AdSearch Startup Folder Persistence File Creation (RedCanary Threat Detection Report)
 2id: 739d97f7-96e3-4e96-aebb-574b4f19d034
 3status: experimental
 4description: Detects file creations by cscript in the startup folder, associated with AdSearch. Part of the RedCanary 2023 Threat Detection Report.
 5references:
 6    - https://redcanary.com/threat-detection-report/threats/adsearch/
 7author: RedCanary, Sigma formatting by Micah Babinski
 8date: 2023/05/10
 9tags:
10    - attack.persistence
11    - attack.t1547.001
12logsource:
13    category: file_event
14    product: windows
15detection:
16    selection:
17        Image|endswith: '\cscript.exe'
18        TargetFilename|contains: 'start menu\programs\startup'
19    condition: selection
20falsepositives:
21    - Rule is likely to require tuning to exclude normal, authorized activity
22level: low```

References

• ChromeLoader - Red Canary Threat Detection Report

  

  This browser hijacker threat went through several evolutions in 2023, challenging our assumptions and allowing us to refine our analysis.

  
  Read More

Related rules

• AdSearch Reg Runkey Persistence Execution (RedCanary Threat Detection Report)
• Direct Autorun Keys Modification
• Startup Folder File Write
• Potential Persistence Attempt Via Run Keys Using Reg.EXE
• Suspicious Run Key from Download