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Virus Profile: BackDoor-EEF!0d0391b35727

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 21/10/2009
Date Added: 21/10/2009
Origin: Unknown
Length: 74240
Type: Trojan
Subtype: -
DAT Required: 5778
Removal Instructions
   
 
 
   

Description

This is a Trojan detection. Unlike viruses, Trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include e-mail, malicious or hacked Web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.

Indication of Infection

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Methods of Infection

Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.

   

Virus Characteristics

File PropertyProperty Value
FileName!itw#2~1.exe
McAfee ArtemisArtemis!0d0391b35727
McAfee DetectionBackDoor-EEF
Length74,240 bytes
CRCE2D5279A
MD50D0391B35727720B01FE04962B8D6911
SHA1F2EBBC4724F5622411C524180EFFAB2209B98654

Other Common Detection Aliases

Company NameDetection Name
ahnlabWin32/Kolab.worm.Gen
avastWin32:Trojan-gen
AVG (GriSoft)IRC/BackDoor.SdBot4.NAZ
AviraTR/Refroso.hwm
BitDefenderIRC-Worm.Generic.6731
Dr.WebBackDoor.IRC.Sdbot.5217
EsetIRC/SdBot
FortiNetW32/Refroso.HWM!tr
F-ProtW32/Backdoor2.FPFM
KasperskyTrojan.Win32.Refroso.hwm
microsoftWorm:Win32/Pushbot.NJ
normanW32/Smalldoor.JGWN
pandaBck/Sdbot.JED.worm
SophosMal/EncPk-JU
SymantecW32.IRCBot
Trend MicroTROJ_REFROSO.AD
vba32Backdoor.Win32.SdBot.oqy
V-BusterTrojan.Refroso.XX

Avert® Labs has observed the following system activities:

ActivityRisk Level
Modifies memory of other processes
Critical
Modifies the operating system security policy
Critical
Enumerates open windows
Medium
Uses shared memory of other processes
Low
Writes executable in the windows folder
Low
Creates registry keys and data values to persist on OS reboot
Informational

Other detections that have been observed.

FileNameMcAfee Supported
%WINDIR%\livemessenger.com
BackDoor-EEF

System Changes

These are general defaults for typical path variables. (Although they may differ, these examples are common.):
%WinDir% = \WINDOWS (Windows 9x/ME/XP/Vista), \WINNT (Windows NT/2000)
%SystemDir% = \WINDOWS\SYSTEM (Windows 98/ME), \WINDOWS\SYSTEM32 (Windows XP/Vista), \WINNT\SYSTEM32 (Windows NT/2000)
%ProgramFiles% = \Program Files

The following files were analyzed:

  • %USERPROFILE%\local settings\temp\!itw#2~1.exe
  • The following files have been added to the system:

  • %WINDIR%\admintxt.txt
  • %WINDIR%\livemessenger.com
  • The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\currentversion\policies\system\
    • disableregistrytools = 1
    • disabletaskmgr = 1
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\currentversion\runonce\
    • microsoft update = livemessenger.com
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\currentversion\runonceex\
    • microsoft update = livemessenger.com
  •    
    AVERT recommends to always use latest DATs and engine. This threat will be cleaned if you have this combination.

    Additional Windows ME/XP removal considerations

       

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