Sophos

Troj/Multidr-EP

Aliases
  • Trojan-Dropper.Win32.Agent.yy
  • MultiDropper-OZ
  • trojan
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Drops more malware
  • Installs itself in the registry
Protection available since 25 October 2005 08:55:03 (GMT)
Detected by All Sophos products
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Action

More Information

Troj/Multidr-EP is a downloader Trojan for the Windows platform.

When first run Troj/Multidr-EP copies itself to <Windows>\sachostx.exe and creates the following files:

<System>\attrib.ini - this file may be deleted
<System>\hard.lck - this file may be deleted
<System>\msvcrl.dll - detected by Sophos as Troj/PWSteal-D
<System>\sachostb.exe - detected by Sophos as Troj/Bdoor-JP
<System>\sachostc.exe - detected by Sophos as Troj/Proxy-W
<System>\sachostp.exe - detected by Sophos as Troj/PWSteal-D
<System>\sachosts.exe - detected by Sophos as Troj/Proxy-V
<System>\sachostw.exe - detected by Sophos as W32/Loosky-A

The following registry entry is created to run sachostx.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
HostSrv
<Windows>\sachostx.exe

Troj/Multidr-EP includes functionality to download files from the internet and run them.

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