Virus:TR/Vilsel.ssr
Type:Trojan
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low
Static file:Yes
File size:47.616 Bytes
MD5 checksum:e1e5e9d30d9c28bf64612b051fc4b31b

 General Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Downloads a malicious file
   • Drops files
   • Lowers security settings
   • Registry modification

 Files It deletes the initially executed copy of itself.



It deletes the following files:
   • C:\Temp\uninst0089ef8.bat
   • C:\Temp\a756.tmp



The following files are created:

– %SYSDIR%\kr_done1
– %TEMPDIR%\uninst0089ef8.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.



It tries to download a file:

– The location is the following:
   • http://ihppxoaw.loaddd.in/t/%character string%/**********
At the time of writing this file was not online for further investigation.

 Registry The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
   New value:
   • "MigrateProxy"=dword:0x00000001
   • "ProxyEnable"=dword:0x00000000

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\
   ZoneMap]
   New value:
   • "ProxyBypass"=dword:0x00000001

– [HKLM\SOFTWARE\Microsoft]
   New value:
   • "kr_done1"=dword:0x000000c3

 Process termination List of processes that are terminated:
   • ashMaiSv.exe; ashServ.exe; VetMsg.exe; ISafe.exe; CAVRID.exe;
      F-Sched.exe; FP-Win.exe; fpavupdm.exe; fssm32.exe; fsgk32st.exe;
      fsav32.exe; Tmntsrv.exe; PCCClient.exe; pccguide.exe; bdnagent.exe;
      bdss.exe; MskAgent.exe; MpfAgent.exe; MSKSrvr.exe; MpfService.exe;
      Pavkre.exe; AVENGINE.EXE; pavprsrv.exe; prevsrv.exe; pavsrv51.exe;
      avgamsvr.exe; avgupsvc.exe; avgcc.exe; navapsvc.exe; Rtvscan.exe;
      DefWatch.exe; vptray.exe; nod32kui.exe; nod32krn.exe; avp.exe;
      kav.exe; kavsvc.exe


 Miscellaneous  Checks for an internet connection by contacting the following web sites:
   • microsoft.com
   • linux.org
   • yahoo.com
   • google.com

Description inserted by Petre Galan on Thursday, February 18, 2010
Description updated by Petre Galan on Thursday, February 18, 2010

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