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Virus Profile: W32/Autorun.worm!8d4c252897a3

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 8/31/2009
Date Added: 8/31/2009
Origin: Unknown
Length: 108032
Type: Virus
Subtype: Worm
DAT Required: 5726
Removal Instructions
   
 
 
   

Description

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then further propagate the virus. Although many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

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

File PropertyProperty Value
FileName1dymenjs.exe
McAfee ArtemisArtemis!8d4c252897a3
McAfee DetectionW32/Autorun.worm
Length108,032 bytes
CRC287C0895
MD58D4C252897A3BE33055578EF67C08541
SHA13F7D8D34102978AC1A06775F8CE97A3022CCF284

Other Common Detection Aliases

Company NameDetection Name
avastWin32:AutoRun-AIQ [Wrm]
AVG (GriSoft)Generic10.TMU (Trojan horse)
AviraTR/Autorun.acb
BitDefenderWorm.Rokshak.A
clamavWorm.Autorun-1109
Dr.WebWin32.HLLW.Autoruner.6316
EsetWin32/AutoRun.MC worm
FortiNetW32/AutoRun.DRY!worm
F-ProtW32/Worm.VMC
KasperskyWorm.Win32.AutoRun.dry
microsoftworm:win32/rokhshah.a
normanW32/AutoRun.RON
pandaW32/AutoRun.DJ.worm
SophosMal/Generic-A
SymantecW32.SillyFDC
vba32Worm.Win32.AutoRun.dry
V-BusterWorm.AutoRun.dqw
Vet (Computer Associates)
Win32/Rokshah.A

Avert® Labs has observed the following system activities:

ActivityRisk Level
Enumerates running processes
Medium
Uses shared memory of other processes
Low

Other detections that have been observed.

FileNameMcAfee Supported
%WINDIR%\system32\service.exe
W32/Autorun.worm

This sample can be identified by the following symptoms.

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\1dymenjs.exe

    • The following files have been added to the system:

  • %WINDIR%\system32\autorun.inf
  • %WINDIR%\system32\explorer.exe
  • %WINDIR%\system32\service.exe

    • The following registry elements have been created:

  • HKEY_CURRENT_USER\software\service\
    • version = 306519
  • HKEY_LOCAL_MACHINE\software\service\
    • version = 306519

    • The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\currentversion\run\
    • network services = c:\windows\system32\service.exe

    •    

    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.