Trojan-Dropper.Win32.Small.fj

Technical Details
Payload
Removal instructions

Technical Details

This Trojan is designed to install and launch other malicious programs on the victim machine without the user’s knowledge or consent. It is a Windows PE EXE file. The file is approximately 7KB in size.

Payload

Once launched, the Trojan extracts the following files from its body, saves them to the Windows root directory and launches them:

• %WinDir%\slchost.exe – this file is 4608 bytes in size. It will be detected by Kaspersky Anti-Virus as Trojan-Spy.Win32.Small.p;
• %WinDir%\msrt32.dll – this file is 3072 bytes in size. It will be detected by Kaspersky Anti-Virus as Trojan-Spy.Win32.Small.n.

In order to ensure that the Trojan is launched automatically when the system is rebooted, the Trojan registers its executable file in the system registry:

Removal instructions

If your computer does not have an up-to-date antivirus, or does not have an antivirus solution at all, follow the instructions below to delete the malicious program:

1. Use Task Manager to terminate the Trojan process.
2. Delete the original Trojan file (the location will depend on how the program originally penetrated the victim machine).
3. Delete the following files:

   %WinDir%\slchost.exe
   %WinDir%\msrt32.dll

4. Delete the following system registry key parameter:
   [HKLM\Software\Microsoft\Windows\CurrentVersion\Run]
   "Systems Restart" = "%WinDir%\slchost.exe"
5. Update your antivirus databases and perform a full scan of the computer (download a trial version of Kaspersky Anti-Virus).