Sophos

Troj/ServU-CT

Aliases
  • Backdoor.Win32.ServU-based.ad
Category
Type
What to do
Prevalence low high

Summary

 
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 20 April 2006 12:56:56 (GMT)
Detected by All Sophos products
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Action

More Information

Troj/ServU-CT is a backdoor Trojan for the Windows platform.

Troj/ServU-CT allows an infected computer to be used as a file server.

When Troj/ServU-CT is installed the following files are created:

<System>\inetsrv\JAstat.dll
<System>\inetsrv\JAstat.ini
<System>\inetsrv\JAstat.stats
<System>\inetsrv\ServUCert.crt
<System>\inetsrv\ServUCert.key
<System>\inetsrv\dirchange.txt
<System>\inetsrv\help.txt
<System>\inetsrv\libeay32.dll
<System>\inetsrv\logoff.txt
<System>\inetsrv\msdtcdll.bin
<System>\inetsrv\msdtce.exe
<System>\inetsrv\read.txt
<System>\inetsrv\rules.txt
<System>\inetsrv\ssleay32.dll
<System>\inetsrv\stat.txt
<System>\inetsrv\topdl.body
<System>\inetsrv\topdl.foot
<System>\inetsrv\topdl.head
<System>\inetsrv\topul.body
<System>\inetsrv\topul.foot
<System>\inetsrv\topul.head
<System>\inetsrv\ustat.txt
<System>\inetsrv\who.body
<System>\inetsrv\who.foot
<System>\inetsrv\who.head

The file msdtce.exe is also detected as Troj/ServU-CT. The rest of the files are clean, and may safely be deleted.

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

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Microsoft Distributed Transaction
<System>\inetsrv\msdtce.exe

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