Virus Profile: W32/Sasser.worm.gen.b!CF3B319784BC

Threat Search
Print
   
Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 12/31/2010
Date Added: 12/31/2010
Origin: Unknown
Length: 81920
Type: Virus
Subtype: -
DAT Required: 6212
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/Sasser.worm.gen.b
Length81920 bytes
MD5cf3b319784bc7726902a16eac192c1e6
SHA188531dd032f2f26136567986c3dfe12e778f81cb


Other Common Detection Aliases

Company NamesDetection Names
avastWin32:SdBot-gen44 [Trj]
AVG (GriSoft)I-Worm/Netsky.AC.dropper
aviraWorm/Rbot.328262
KasperskyNet-Worm.Win32.Sasser.g
BitDefenderMemScan:Win32.Netsky.AD@mm
clamavWorm.SomeFool.AC
Dr.WebWin32.HLLW.Jobaka.6
F-ProtW32/Netsky.AC@mm
FortiNetW32/Sasser.B!worm
Microsoftworm:win32/sasser.g
SymantecW32.IRCBot
EsetWin32/Sasser.G worm
normanSasser.G (worm)
pandaW32/Sasser.I.worm
risingWorm.NetSky.ad
SophosW32/Sasser-G
Trend MicroWORM_SASSER.GEN
vba32Net-Worm.Win32.Sasser.g
Vet (Computer Associates)Win32/Netsky.AC

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


ActivitiesRisk Levels
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaW32/Sasser.worm.gen.b
McAfee SupportedW32/Sasser.worm.gen.b



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:

88531DD032F2F26136567986C3DFE12E778F81CB

The following files have been added to the system:

  • %WINDIR%\wserver.exe
  • %WINDIR%\comp.cpl
  • %WINDIR%\skynet.cpl

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\WSERVER = %WINDIR%\wserver.exe

E-mails Sent:
To: (Varies, the following have been observed)

  • gghjj@[Domain Removed]
  • Reads email addresses from Email Lists
  • user1@Attempts to send emails to local domains

From: (Varies, the following have been observed)

  • support@[Domain Removed]

Subject: (Varies, the following have been observed)

  • Escalation

   

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.

   

PC Infected? Get Expert Help

McAfee
Virus Removal Service

Connect to one of our Security Experts by phone. Have your PC fixed remotely - while you watch!

$89.95