Threat Description



Aliases: Exploit.D-Encrypted.Gen
Category: Malware
Type: Exploit
Platform: W32


A program or technique that takes advantage of a vulnerability to remotely access or attack a program, computer or server.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.


Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Technical Details

This malware is distributed as a malicious Microsoft Excel document attached to an e-mail message. The malicious Excel file itself is detected with the Generic Detection Exploit.D-Encrypted.Gen.

The Excel file contains an embedded encrypted executable file. It also contains an embedded Flash (.swf) file maliciously modified to exploit a known vulnerability (CVE-2011-0609) in certain older, unpatched versions of Adobe Flash player.

The Flash file decrypts the embedded executable file (detected as Trojan.Agent.ARKJ), which is the real payload for this malware.

Once decrypted, the trojan attempts to connect to and download additional files from:

  • https: //

At the time of writing, the malware appears unable to find the target files.


Further information on the exploit used is available at:


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