Trojan-Dropper:W32/CosmicDuke

Classification

Category :

Malware

Type :

Trojan-Dropper

Platform :

W32

Aliases :

CosmicDuke, MiniDuke

Summary

Trojan-Dropper:W32/CosmicDuke steals information from an infected system using keylogging, screen captures and stealing file and clipboard data. Harvested data is forwarded to a remote server via FTP.

Removal

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

Check for the latest database updates

First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample

After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning

If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

Note: You need administrative rights to change the settings.

Technical Details

The CosmicDuke trojan-dropper appears to be spread in 'bait' image, document and PDF files, which contain an exploit or a buried Windows executable program. Once the bait file is opened, the exploit or program is launched and begins to harvest data from the infected machine.

In addition to its information-stealing activities, CosmicDuke is notable for sharing code with MiniDuke, a malware known to have been used to attack various NATO and European government agencies in February 2013.

For more information, see Labs Weblog post:CosmicDuke: Cosmu With a Twist of MiniDuke or download the whitepaper.