StartPage-NK!F1E77BA6​B998

This page shows details and results of our analysis on the malware StartPage-NK!F1E77BA6B998

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

66578

Description Added

2013-04-01

Description Modified

2013-04-01

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionStartPage-NK
Length66578 bytes
MD5f1e77ba6b9986c69d70275d1f784e913
SHA1c5456bf0a9393f3c84d8471faf8149fc5da913c6


Other Common Detection Aliases

Company NamesDetection Names
ahnlabTrojan/Win32.Agent
avastWin32:Malware-gen
AVG (GriSoft)Downloader.Generic11.BSJP (Trojan horse)
aviraTR/Gendal.6194644
BitDefenderTrojan.Generic.5682483
clamavTrojan.Agent-247123
Dr.WebTrojan.Siggen3.38291
F-ProtW32/Plingky.A.gen!Eldorado
FortiNetW32/Agent.CYL!tr
MicrosoftTrojan:Win32/Startpage.NT
SymantecTrojan.Gen
EsetWin32/Agent.RZI trojan (variant)
normanOficla.OO
pandaTrj/Genetic.gen
risingDropper.Win32.Undef.bxh
SophosMal/Encpk-AHN
Trend MicroTROJ_DROPR.SMIL
vba32Trojan-Dropper.LiveMeat
Vet (Computer Associates)Win32/Startpage.UGY

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


ActivitiesRisk Levels
Attempts to launch an instance of Internet Explorer.Low
Enumerates many system files and directories.Low
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaStartPage-NK
McAfee SupportedStartPage-NK



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:

C5456BF0A9393F3C84D8471FAF8149FC5DA913C6

The following files have been added to the system:

  • %USERPROFILE%\desktop\.url
  • %TEMP%\tmp_ext_favurl_cab.bat
  • %TEMP%\desktop_url.cab
  • %TEMP%\bibibei.exe
  • %TEMP%\run_xz_file.bat
  • %USERPROFILE%\Favorites\.url
  • %TEMP%\ERRRRRRR.dat
  • %PROGRAMFILES%\LiveMeeting\rarExts32.dat
  • %USERPROFILE%\favorites\.url
  • %USERPROFILE%\favorites\.url
  • %USERPROFILE%\Desktop\.url
  • %USERPROFILE%\favorites\.url
  • %USERPROFILE%\Desktop\Internet Explorer.url
  • %TEMP%\inlE.tmp
  • %TEMP%\favorites_url.cab
  • %TEMP%\run_dws_file.bat
  • %WINDIR%\SYSTEM32\clientex.exe
  • %USERPROFILE%\Desktop\.url
  • %TEMP%\tmp_ext_deskurl_cab.bat
  • %TEMP%\lsm-yiwetm.tmp
  • %USERPROFILE%\favorites\.url
  • %APPDATA%\ampw.ooe.ini

The following files have been changed:

  • %PROGRAMFILES%\msn gaming zone\windows\hrtzzm.exe

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

  • %TEMP%\inl10.tmp
  • %TEMP%\scs12.tmp
  • %PROGRAMFILES%\iexplore.exe
  • %TEMP%\scs11.tmp

The following registry elements have been created:

  • HKEY_LOCAL_MACHINE\SOFTWARE\WINRAR\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\MAIN\WINDOW_PLACEMENT = [binary data]
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\TOOLBAR\LOCKED = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\WINRAR\FMM150 = setup_m_flag_fmm150
  • HKEY_LOCAL_MACHINE\SOFTWARE\WINRAR\HP = http://www.wz4321.com/?10000
  • HKEY_LOCAL_MACHINE\SOFTWARE\WINRAR\UDATE = 11_15
  • HKEY_LOCAL_MACHINE\SOFTWARE\WINRAR\UID = 48
  • HKEY_LOCAL_MACHINE\SOFTWARE\WINRAR\UNAME = system
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%PROGRAMFILES%\LiveMeeting\rarExts32.dat !\??\%WINDIR%\fxsst.dll

The applications attempted the following network connection(s):

  • 42.120.43.**:80
  • 121.14.142.**:80
  • hxxp://jump2.35638.com:27889/*****
  • hxxp://tc.92mh.com/
  • hxxp://www.xunlei100.com/msn/software/partner/w/*****

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