Trojan-Downloader.Win32.Small.dam

Technical Details

This Trojan downloads other malicious programs from the Internet and launches them on the victim machine. The program itself is a Windows PE EXE file. The file size may vary significantly.

This Trojan was originally sent as spam.

Infected messages:

Message subject (chosen at random from the list below):

• A killer at 11, he's free at 21 and kill again!
• U.S. Secretary of State Condoleezza Rice has kicked German Chancellor Angela Merkel
• British Muslims Genocide
• Naked teens attack home director.
• 230 dead as storm batters Europe.
• Re: Your text
• Radical Muslim drinking enemies's blood.
• Chinese missile shot down Russian satellite
• Chinese missile shot down Russian aircraft
• Chinese missile shot down USA aircraft
• Chinese missile shot down USA satellite
• Russian missile shot down USA aircraft
• Russian missile shot down USA satellite
• Russian missile shot down Chinese aircraft
• Russian missile shot down Chinese satellite
• Saddam Hussein safe and sound!
• Saddam Hussein alive!
• Venezuelan leader: "Let's the War beginning".
• Fidel Castro dead.

Attachment name (chosen at random from the list below):

• FullVideo.exe
• Full Story.exe
• Video.exe
• Read More.exe
• FullClip.exe
• GreetingPostcard.exe
• MoreHere.exe
• FlashPostcard.exe
• GreetingCard.exe
• ClickHere.exe
• ReadMore.exe
• FlashPostcard.exe
• FullNews.exe
• Installation

Once launched, the Trojan creates the following files in the Windows system directory:

• %System%\peers.ini
• %System%\wincom32.sys - this file is 41 728 bytes in size. It will be detected by Kaspersky Anti-Virus as Rootkit.Win32.Agent.dh

The Trojan registers its files in the following system registry keys:,/p>

Payload

The Trojan attempts to download other files from the Internet and launch them on the victim machine.

A remote malicious user may place any malicious program on the links contained in the body of the Trojan.

Removal instructions

1. Reboot the computer in Safe Mode (at the start of the boot sequence, press and hold F8, then choose Safe Mode from the Windows boot menu).
2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
3. Delete the following files from the Windows system directory:
   %System%\peers.ini
   %System%\wincom32.sys
4. Delete the following registry keys:
   [HKLM\System\CurrentControlSet\Services\wincom32]
   [HKLM\System\CurrentControlSet\Enum\Root\LEGACY_WINCOM32]
5. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).