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Virus Profile: Generic PWS.y!cae!3C3D209960B5

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 5/26/2012
Date Added: 5/26/2012
Origin: Unknown
Length: 50176
Type: Trojan
Subtype: -
DAT Required: 6723
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

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric PWS.y!cae
Length50176 bytes
MD53c3d209960b5d4774e1cd15abf7f6087
SHA1d2e0a82134887c2b4967661a9a4b7649f3834371


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin32/IRCBot.worm.variant
avastWin32:Zbot-MQY
AVG (GriSoft)PSW.Generic7.BLXG
aviraTR/Dropper.Gen
BitDefenderGen:Heur.Krypt.10
Dr.WebBackDoor.IRC.Bot.200
F-ProtW32/MalwareS.HFD
FortiNetW32/Injector.HMF!tr
MicrosoftVirTool:Win32/Injector.gen!AR
SymantecInfostealer
EsetWin32/Injector.BAB
normanW32/Suspicious_Gen2.PDZSC
risingTrojan.Win32.Generic.11E88326
SophosMal/Resdro-A
Trend MicroWORM_EGGDROP.SMF
vba32Trojan.Win32.Bofa.01
V-BusterTrojanSpy.Zbot.vbb

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


ActivitiesRisk Levels
Attempts to connect to an IRC server. Can be used by bots to get instructions or send data to a remote server.Medium
Modifies Windows firewall settings.Medium
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric PWS.y!cae
McAfee SupportedGeneric PWS.y!cae



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:

wupdate.exe

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\WINDOWS DLL LOADER = %WINDIR%\SYSTEM32\d2e0a82134887c2b4967661a9a4b7649f3834371
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\WINUPDATE = %WINDIR%\SYSTEM32\wupdate.exe
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\SHAREDACCESS\PARAMETERS\FIREWALLPOLICY\STANDARDPROFILE\AUTHORIZEDAPPLICATIONS\LIST\%WINDIR%\SYSTEM32\D2E0A82134887C2B4967661A9A4B7649F3834371 = %WINDIR%\SYSTEM32\d2e0a82134887c2b4967661a9a4b7649f3834371:*:Enabled:Windows DLL Loader

The applications attempted the following network connection(s):

  • 91.121.171.**:6764
  • 91.121.171.**:4676 (irc) : NICK d[kjmuVVR]b
  • 91.121.171.**:4676 (irc) : USER yabtvr yabtvr yabtvr :qmuqzmzyhjbmedou
  • 91.121.171.**:4466

   

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.