W32/Sperolz.gen.a!EF3​0CFBA362F

This page shows details and results of our analysis on the malware W32/Sperolz.gen.a!EF30CFBA362F

Overview

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.


Minimum Engine

5600.1067

File Length

110592

Description Added

2013-04-02

Description Modified

2013-04-02

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionW32/Sperolz.gen.a
Length110592 bytes
MD5ef30cfba362f93b67d354c65629d93b1
SHA142fb1b5fbec07ca450da15f3ff70a6a672dd4c0b


Other Common Detection Aliases

Company NamesDetection Names
ahnlabWin32/Dellboy.AW
avastWin32:Malware-gen
AVG (GriSoft)generic11.ttt
aviraTR/Dropper.Gen
KasperskyTrojan.Win32.Agent.ahto
BitDefenderTrojan.Generic.3093636
clamavPUA.Win32.Packer.PecompactHeuris
Dr.WebTrojan.Siggen.1675
F-ProtW32/Trojan2.FKJF
MicrosoftWorm:Win32/Sperolz.A
SymantecTrojan.Dropper
EsetWin32/AutoRun.VB.HD worm
normanAgent.IYPY
pandaTrj/Downloader.MDW
risingTrojan.DL.Win32.Undef.fop
SophosMal/Behav-236
Trend MicroPossible_Otorun8
vba32Trojan.Win32.Agent.ahto
V-BusterTrojan.Agent!h+IvtRQrNRY (trojan)
Vet (Computer Associates)Win32/SillyAutorun.TP

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaW32/Sperolz.gen.a
McAfee SupportedW32/Sperolz.gen.a



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:

42FB1B5FBEC07CA450DA15F3FF70A6A672DD4C0B

The following files have been added to the system:

  • %WINDIR%\winlog.exe
  • %TEMP%\42FB1B5FBEC07CA450DA15F3FF70A6A672DD4C0B.exe
  • %TEMP%\42FB1B5FBEC07CA450DA15F3FF70A6A672DD4C0B.eve

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

  • %TEMP%\scs8.tmp
  • %TEMP%\scs9.tmp
  • %TEMP%\~DFF113.tmp

Symptoms

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

Method 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.

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