JS/Nemucod.DRC!tr

Analysis

JS/Nemucod.DRC!tr is a generic detection for a JS Downloader trojan. Since this is a generic detection, malware that are detected as JS/Nemucod.DRC!tr may have varying behaviour.
Below are examples of some of these behaviours:

• This malware spawns a powershell command line that intends to download from hxxps://aedward{Removed}.co/wp-includes/IXR/get.php? and drop it as undefinedAppDataundefined\[Random].exe, afterwhich it is executed. During the time of our tests the URL appears to be offline.


• This malware is usually embedded within Word documents, below are some examples of infected document and infected mail:
  

  Figure 1: Infected Document.

  
  

  Figure 2: Infected document.

  
  

  Figure 3: Email with Infected Document.

  
  

  Figure 4: Infected email.

  
  

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.