Virus Profile: W32/Autorun.worm.gen!CDD535C4C75D

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 11/5/2012
Date Added: 11/5/2012
Origin: Unknown
Length: 450560
Type: Virus
Subtype: Win32
DAT Required: 6887
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/Autorun.worm.gen
Length450560 bytes
MD5cdd535c4c75dec035e78223a14daa358
SHA196215019a21a7c10661d363a1c784247f50f0e6d


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareTrojan.Win32.Malex!IK
avastWin32:Vitro
AVG (GriSoft)Generic18.TWP
aviraTR/Malex.E.341
BitDefenderTrojan.Generic.KDV.72024
clamavWorm.Autorun-8270
Dr.WebTrojan.MulDrop3.949
FortiNetW32/Agent.UW!tr
MicrosoftTrojan:Win32/Malex.gen!E
SymantecTrojan.Gen
EsetWin32/AutoRun.Agent.UW
normanw32/virut.e!gs
pandaW32/Esfury.A
risingWorm.Win32.FakeFolder.b
SophosMal/Emogen-Y
Trend MicroMal_OtorunN
vba32Win32.AutoRun.Agent.UW
V-BusterWorm.AutoRun!3y5nuG96GG8
Vet (Computer Associates)Win32/SillyAutorun.EML

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


ActivitiesRisk Levels
Modifies Windows explorer file browser's Advanced settings. Sometimes used by malware to make executable files look like documents.Medium
Modifies Windows folder view settings. Could be used to make executable files look like documents.Medium
Adds or modifies winlogon userinit registry value. Could be used to launch a program on startup.Medium
Modifies winlogon configuration settings in registryMedium
Enumerates many system files and directories.Low
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaW32/Autorun.worm.gen
McAfee SupportedW32/Autorun.worm.gen



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:

96215019a21a7c[private subnet]c784247f50f0e6d

The following files have been added to the system:

  • %TEMP%\xx5
  • %TEMP%\xx2
  • %COMMONPROGRAMFILES%\svchost.exe
  • %TEMP%\xx4
  • %WINDIR%\drive.ini
  • %TEMP%\xx6
  • %TEMP%\xx3
  • %TEMP%\alldetails.txt

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\USERINIT = %WINDIR%\SYSTEM32\userinit.exe,%COMMONPROGRAMFILES%\svchost.exe -s
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\FOLDER\HIDDEN\SHOWALL\CHECKEDVALUE = 0x00000001 (1)
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\EXPLORER\ADVANCED\FOLDER\HIDEFILEEXT\UNCHECKEDVALUE = 0x00000000 (0)
  • 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

   

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.

   

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