Trojan:W32/Agent.DKJC

Classification

Trojan:W32/Agent.DKJC, Trojan.Agent.AQLJ , Trojan-Spy.Win32.Zbot.amwm, PWS:Win32/Zbot.SV (Microsoft)

Summary

Trojan:W32/Agent.DKJC identifies files involved in a recent spam run. On running the malicious file, a Zeus/Zbot variant is installed.

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

This malware is further discussed in our Labs Weblog:

Once Again, Zeus

Distribution

The spam run involves malicious ZIP files distributed using varying file names. Names seen so far include:

>2010 Contract With LC Change 051005.exe
>Flight Attendant-0600003A.exe
>Second chord sounds in world's longest lasting concert - Yahoo! News.exe
>Cancellation Notice.exe
>BURRESS_WEDDING_AUGUST2010.exe
>IN255596.exe
>2010 expenses.exe
>resume.exe

Activity

Manually executing the malicious ZIP file causes a variant from the Trojan-Spy:W32/Zbot family to install on the machine. For more information on Zeus/Zbot capabilities, please see the Trojan-Spy:W32/Zbot description.The malware also downloads additional components from two Russian websites: