W32/Wauchos.AF!tr

Analysis

W32/Wauchos.AF!tr is a generic detection for a type of trojan that drops other malware onto the compromised computer. Since this is a generic detection, files that are detected as W32/Wauchos.AF!tr may have varying behavior.
Below are examples of some of these behavior:

• Creates a copy of itself to the All Users' Profile folder using a randomized name.


• Adds the following registry to enable its automatic execution:
  
  • key: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\polices\Explorer\Run
  • value: [Random Digits]
  • data: undefinedAllUsersProfileundefined\[Random Letters].exe


• Employs techniques against emulators and security-related tools.


• The original copy of the malware is deleted after execution.

Recommended Action

• Make sure that your FortiGate/FortiClient system is using the latest AV database.
• Quarantine/delete files that are detected and replace infected files with clean backup copies.