W32/Expiro!05061AE063​64

This page shows details and results of our analysis on the malware W32/Expiro!05061AE06364

Overview

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.


Minimum DAT

7127 (2013-07-05)

Updated DAT

7127 (2013-07-05)

Minimum Engine

5400.1158

File Length

583168

Description Added

2013-07-06

Description Modified

2013-07-06

Malware Proliferation

Characteristics

This is a Virus

File PropertiesProperty Values
McAfee DetectionW32/Expiro
Length583168 bytes
MD505061ae063643afb96789f1fabc218a1
SHA1627e82636429e8604b5116b002b1568a20879a0b


Other Common Detection Aliases

Company NamesDetection Names
EMSI SoftwareGen:Trojan.Heur.Jq0@uaJug0f (B)
avastWin32:Expiro-CC
AVG (GriSoft)Win32/Expiro
aviraTR/Spy.Agent.561152
KasperskyUDS:DangerousObject.Multi.Generic
BitDefenderGen:Trojan.Heur.Jq0@uaJug0f
F-ProtW32/Expiro.AO
FortiNetW32/Expiro.NAP
MicrosoftVirus:Win32/Expiro.BM
Eseta variant of Win32/Expiro.NBB
normanExpiro.YG
SophosW32/Expiro-H
Trend MicroTROJ_GEN.F47V0705

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


ActivitiesRisk Levels
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaW32/Expiro
McAfee SupportedW32/Expiro



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:

627E82636429E8604B5116B002B1568A20879A0B

The following files have been added to the system:

  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\ngenrootstorelock.dat
  • %WINDIR%\SYSTEM32\msiexec.exe
  • %WINDIR%\SYSTEM32\vssvc.exe
  • %WINDIR%\SYSTEM32\smlogsvc.exe
  • %WINDIR%\SYSTEM32\dmadmin.exe
  • %WINDIR%\SYSTEM32\locator.exe
  • %WINDIR%\SYSTEM32\sessmgr.exe
  • %WINDIR%\SYSTEM32\wbem\wmiapsrv.exe
  • %WINDIR%\SYSTEM32\alg.exe
  • %WINDIR%\microsoft.net\framework\v2.0.50727\aspnet_state.exe
  • %WINDIR%\SYSTEM32\tlntsvr.exe
  • %COMMONPROGRAMFILES%\Microsoft Shared\Source Engine\OSE.EXE
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\ngenservicelock.dat
  • %WINDIR%\SYSTEM32\mnmsrvc.exe
  • %WINDIR%\SYSTEM32\scardsvr.exe
  • %WINDIR%\SYSTEM32\cisvc.exe
  • %WINDIR%\microsoft.net\framework\v2.0.50727\mscorsvw.exe
  • %WINDIR%\SYSTEM32\imapi.exe
  • %WINDIR%\SYSTEM32\netdde.exe
  • %WINDIR%\Microsoft.NET\Framework\v2.0.50727\ngen_service.lock

The following files have been changed:

  • %WINDIR%\microsoft.net\framework\v2.0.50727\ngen_service.log

The following files were temporarily written to disk then later removed:

  • %WINDIR%\SYSTEM32\alg.vir
  • %WINDIR%\SYSTEM32\scardsvr.vir
  • %WINDIR%\SYSTEM32\msiexec.vir
  • %WINDIR%\SYSTEM32\smlogsvc.vir
  • %WINDIR%\SYSTEM32\sessmgr.vir
  • %WINDIR%\SYSTEM32\wbem\wmiapsrv.vir
  • %WINDIR%\SYSTEM32\imapi.vir
  • %COMMONPROGRAMFILES%\Microsoft Shared\Source Engine\ose.vir
  • %WINDIR%\SYSTEM32\cisvc.vir
  • %WINDIR%\SYSTEM32\tlntsvr.vir
  • %WINDIR%\SYSTEM32\locator.vir
  • %WINDIR%\SYSTEM32\mnmsrvc.vir
  • %WINDIR%\SYSTEM32\netdde.vir
  • %WINDIR%\Microsoft.NET\framework\v2.0.50727\mscorsvw.vir
  • %WINDIR%\SYSTEM32\dmadmin.vir
  • %WINDIR%\Microsoft.NET\framework\v2.0.50727\aspnet_state.vir
  • %WINDIR%\SYSTEM32\vssvc.vir

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\SECURITY CENTER\SVC\S-1-5-21-1482476501-[private subnet]522115-500\

The following registry elements have been changed:

  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\.NETFRAMEWORK\V2.0.50727\NGENSERVICE\STATE\ACCUMULATEDWAITIDLETIME = 0
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\SECURITY CENTER\SVC\S-1-5-21-1482476501-[private subnet]522115-500\ENABLENOTIFICATIONS = 0

Symptoms

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

Method 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.

Removal

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.

Variants