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Virus Profile: W32/Virut.gen.a!8BB80190F94B

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 6/11/2012
Date Added: 6/11/2012
Origin: Unknown
Length: 857600
Type: Virus
Subtype: Win32
DAT Required: 6739
Removal Instructions
   
 
 
   

Description

Viruses are self-replicating. They are often spread by a network or by transmission to a removable medium such as a removable disk, writable CD, or USB drive. Viruses may also spread by infecting files on a network file system or a file system that is shared by another computer.

Indication of Infection

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

Methods of Infection

Viruses are self-replicating. They are often spread by a network or by transmission to a removable medium such as a removable disk, writable CD, or USB drive. Viruses may also spread by infecting files on a network file system or a file system that is shared by another computer.

   

Virus Characteristics

This is a Virus

File PropertiesProperty Values
McAfee DetectionW32/Virut.gen.a
Length857600 bytes
MD58bb80190f94b094c533f9f6bd6648902
SHA1c24b604b8de6bc724424815b8db164299c0ca601


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareVirus.Win32.Virut!IK
ahnlabWin32/Virut
avastWin32:Virtob
AVG (GriSoft)Backdoor.Bifrose.ep
aviraW32/Virut.AT
KasperskyVirus.Win32.Virut.at
BitDefenderWin32.Virtob.7.Gen
clamavTrojan.Small-4287
Dr.WebWin32.Virut.27
F-ProtW32/Virut.AG
FortiNetW32/Virut.AV.gen
MicrosoftVirus:Win32/Virut.AA
SymantecW32.Virut.W
EsetWin32/Virut.AT
normanW32/Virut.AH
pandaW32/Virutas.AH
risingWin32.Virut.AL
SophosW32/Virut-Gen
Trend MicroPE_VIRUT.AT
vba32Virus.Virut.07
V-BusterWin32.Virut.Gen.4
Vet (Computer Associates)Win32/Virut.6640

Other brands and names may be claimed as the property of others.


ActivitiesRisk Levels
Uses the Ipconfig commandMedium
Attempts to connect to an IRC server. Can be used by bots to get instructions or send data to a remote server.Medium
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaW32/Virut.gen.a
McAfee SupportedW32/Virut.gen.a



System Changes

Some path values have been replaced with environment variables as the exact location may vary with different configurations.
e.g.
%WINDIR% = \WINDOWS (Windows 9x/ME/XP/Vista/7), \WINNT (Windows NT/2000)
%PROGRAMFILES% = \Program Files


The following files were analyzed:

wmisym.exe

The following files have been added to the system:

  • %TEMP%\c24b604b8de6bc724424815b8db164299c0ca601
The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\SHELL EXTENSIONS\GON
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\WAITTOKILLSERVICETIMEOUT = 7000
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\CATEGORYCOUNT = 16
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\CATEGORYMESSAGEFILE = %WINDIR%\SYSTEM32\ESENT.dll
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\EVENTMESSAGEFILE = %WINDIR%\SYSTEM32\ESENT.dll
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\EVENTLOG\APPLICATION\ESENT\TYPESSUPPORTED = 7
The applications attempted the following network connection(s):

  • 172.0.4.**:445
  • 172.0.1.***:445
  • 172.0.6.**:445
  • 172.0.6.*:445
  • 172.0.5.***:445
  • 172.0.4.***:445
  • 172.0.1.**:445
  • 172.0.1.*:445
  • 172.0.0.***:445
  • 172.0.5.**:445
  • 172.0.5.*:445
  • 172.0.0.**:445
  • 172.0.0.*:445
  • 172.0.4.*:445
  • 172.0.3.***:445
  • 172.0.3.**:445
  • 172.0.3.*:445
  • 172.0.2.***:445
  • 141.8.224.**:5213 (irc) : NICK [00|USA|XP|552018]
  • 141.8.224.**:5213 (irc) : USER SP1-661 * 0 :%COMPUTERNAME%
  • 172.0.2.**:445
  • 172.0.2.*:445
   

All Users:

Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:

1.Disable System Restore .

2.Update to current engine and DAT files for detection and removal.

3.Run a complete system scan.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.


On Windows Vista and 7:

Insert the Windows CD into the CD-ROM drive and restart the computer.
Click on "Repair Your Computer"
When the System Recovery Options dialog comes up, choose the Command Prompt.
Issue 'bootrec /fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.