Suspicious File Creation Activity From Fake Recycle.Bin Folder

 1title: Suspicious File Creation Activity From Fake Recycle.Bin Folder
 2id: cd8b36ac-8e4a-4c2f-a402-a29b8fbd5bca
 3related:
 4    - id: 5ce0f04e-3efc-42af-839d-5b3a543b76c0
 5      type: derived
 6status: experimental
 7description: Detects file write event from/to a fake recycle bin folder that is often used as a staging directory for malware
 8references:
 9    - https://www.mandiant.com/resources/blog/infected-usb-steal-secrets
10    - https://unit42.paloaltonetworks.com/cloaked-ursa-phishing/
11author: X__Junior (Nextron Systems)
12date: 2023/07/12
13modified: 2023/12/11
14tags:
15    - attack.persistence
16    - attack.defense_evasion
17logsource:
18    category: file_event
19    product: windows
20detection:
21    selection:
22        - Image|contains:
23              # e.g. C:\$RECYCLER.BIN
24              - 'RECYCLERS.BIN\'
25              - 'RECYCLER.BIN\'
26        - TargetFilename|contains:
27              # e.g. C:\$RECYCLER.BIN
28              - 'RECYCLERS.BIN\'
29              - 'RECYCLER.BIN\'
30    condition: selection
31falsepositives:
32    - Unknown
33level: high

References

• The Spies Who Loved You: Infected USB Drives to Steal Secrets | Mandiant

  

  In the first half of 2023, Mandiant Managed Defense has observed a threefold increase in the number of attacks using infected USB drives to steal secrets. Mandiant tracked all of the cases and foun...

  
  Read More

• Diplomats Beware: Cloaked Ursa Phishing With a Twist

  

  A Cloaked Ursa phishing campaign targeted Kyiv embassy-based government officials. This is a new tactic targeting individuals instead of organizations.

  
  Read More

Related rules

• PUA - Process Hacker Execution
• Suspicious Process Execution From Fake Recycle.Bin Folder
• Writing Of Malicious Files To The Fonts Folder
• Atbroker Registry Change
• Cisco BGP Authentication Failures