Generic.bfr!731E47899​376

This page shows details and results of our analysis on the malware Generic.bfr!731E47899376

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

1435295

Description Added

2013-12-09

Description Modified

2013-12-09

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionGeneric.bfr
Length1435295 bytes
MD5731e47899376ac63ebad49a52aaeb4b6
SHA1be7b8f06b46b4c83523812989cca772468a9728f


Other Common Detection Aliases

Company NamesDetection Names
KasperskyHEUR:Trojan.Win32.Generic
FortiNetW32/Generic!tr
SymantecSuspicious.Cloud.2

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


ActivitiesRisk Levels
Enumerates many system files and directories.Low
Process attempts to call itself recursivelyLow
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaGeneric.bfr
McAfee SupportedGeneric.bfr



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:

BE7B8F06B46B4C83523812989CCA772468A9728F

The following files have been added to the system:

  • %USERPROFILE%\Start Menu\Programs\Startup\53b6f6cbe7c28bb1a6deaf6cf4f17fd8.exe
  • %TEMP%\nsu36.tmp\nsDialogs.dll
  • %PROGRAMFILES%\Microsoft\SteamSetup\Uninstall.ini
  • %TEMP%\tmp1B.tmp.jpg
  • %TEMP%\tmp1A.tmp
  • %TEMP%\tmp1B.tmp
  • %TEMP%\microsoft.exe.tmp
  • %TEMP%\tmp1A.tmp.exe
  • %TEMP%\nsu36.tmp\System.dll
  • %TEMP%\nsk35.tmp
  • %TEMP%\Microsoft.exe
  • %TEMP%\nsu36.tmp\modern-header.bmp
  • %USERPROFILE%\Start Menu\Programs\Startup\SteamSetup.exe
  • %TEMP%\nsu36.tmp\modern-wizard.bmp
  • %USERPROFILE%\Start Menu\Programs\startup\4.exe
  • %PROGRAMFILES%\Microsoft\SteamSetup\Uninstall.exe

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

  • %TEMP%\$inst\4.tmp
  • %TEMP%\$inst\5.tmp
  • %TEMP%\$inst\2.tmp
  • %TEMP%\nsu36.tmp
  • %TEMP%\$inst\temp_0.tmp
  • %TEMP%\$inst\7.tmp
  • %TEMP%\nsz34.tmp

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\53B6F6CBE7C28BB1A6DEAF6CF4F17FD8\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\ENVIRONMENT\SEE_MASK_NOZONECHECKS = 49
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\53B6F6CBE7C28BB1A6DEAF6CF4F17FD8 = "%TEMP%\microsoft.exe" ..
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN\53B6F6CBE7C28BB1A6DEAF6CF4F17FD8 = "%TEMP%\microsoft.exe" ..
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\DISPLAYICON = %PROGRAMFILES%\Microsoft\SteamSetup\Uninstall.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\DISPLAYNAME = SteamSetup 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\DISPLAYVERSION = 49
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\ESTIMATEDSIZE = 1335
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\HELPLINK = mailto:support@[Domain Removed]
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\INSTALLDATE = 20121116
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\INSTALLLOCATION = %PROGRAMFILES%\Microsoft\SteamSetup\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\INSTALLSOURCE = %TEMP%\
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\LANGUAGE = 1033
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\NOMODIFY = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\NOREPAIR = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\PUBLISHER = Microsoft
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\UNINSTALLSTRING = %PROGRAMFILES%\Microsoft\SteamSetup\Uninstall.exe
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\URLINFOABOUT = http://store.steampowered.com/
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\VERSIONMAJOR = 1
  • HKEY_LOCAL_MACHINE\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\UNINSTALL\STEAMSETUP 1\VERSIONMINOR = 0

The applications attempted the following network connection(s):

  • 41.98.224.***:1177
  • 204.45.52.**:80

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

Please use the following instructions for all supported versions of Windows:


1. Disable Windows System Restore. For instructions, please refer to: http://www.mcafee.com/us/downloads/free-tools/disabling-system-restore.aspx

2. Update your McAfee Anti-Virus product to the latest version (when possible), and ensure the latest DAT and Engine and any applicable EXTRA.DATs are installed.

3. Run a full system scan. (On-Demand Scan)

4. Reboot, as soon as it is convenient, to ensure all malicious components are removed.

Variants