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Generic FakeAlert.d!7468531D

This page shows details and results of our analysis on the malware Generic FakeAlert.d!7468531D

Threat Detail

Malware Type: Trojan

Malware Sub-type: N/A

Discovery Date: 2008-10-22

Next Steps:

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 DAT

5412 (2008-10-22)

Updated DAT

5412 (2008-10-22)

 Minimum Engine

5.3.00

File Length

10240

 Description Added

2008-10-22

Description Modified

2008-10-22

Malware Proliferation

Characteristics

File PropertyProperty Value
FileNamebrastk.exe
McAfee DetectionGeneric FakeAlert.d
Length10,240 bytes
CRC7468531D
MD53746CAB2BBA1307F50CB4A5C8C3F95BC
SHA13CD598D16E28B3F471880F9166CEE3EC1A154C45

Other Common Detection Aliases

Company NameDetection Name
avastWin32:Lighty-B [Cryp]
AVG (GriSoft)Downloader.Zlob.AEMW
AviraTR/Dldr.FraudLoad.vcow
BitDefenderPacker.Malware.Lighty.I
Dr.WebTrojan.Click.19754
EMSI SoftwareVirus.Win32.Zbot.AQM!IK
Eseta variant of Win32/TrojanDownloader.FakeAlert.ME
FortiNetPossibleThreat
KasperskyTrojan-Downloader.Win32.FraudLoad.vcow
microsoftTrojan:Win32/Renos.I
normanW32/Lighty.E
pandaAdware/XPAntiSpyware2009
SophosMal/EncPk-EQ
SymantecTrojan.Virantix.C
vba32OScope.Downloader.Braviax.3
V-BusterTrojan.Renos.ATC
Vet (Computer Associates)
Win32/FakeAVDl.AX

Avert® Labs has observed the following system activities:

ActivityRisk Level
Lowers Internet Explorer security zone settings
Critical
Enumerates open windows
Medium
Uses shared memory of other processes
Low
Writes executable in the windows folder
Low
Creates an Internet Explorer tool bar
Informational
Registers DLLsInformational
Replaces browser home page
Informational

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 have been added to the system:

  • %WINDIR%\system32\wini104552663.exe

    • The following registry elements have been changed:

  • hkey_local_machine\software\classes\typelib\{1ea4dbf0-3c3b-11cf-810c-00aa00389b71}\1.1\0\win32\
    • (default) = c:\windows\system32\oleacc.dll
    • (default) = oleacc.dll
  • hkey_local_machine\software\microsoft\internet explorer\main\
    • default_search_url = http://www.google.com/ie
    • search page = http://www.google.com
    • start page = http://www.google.com
  • hkey_local_machine\software\microsoft\internet explorer\search\
    • searchassistant = http://www.google.com
  • hkey_users\s-1-5-21-1202660629-602609370-839522115-500\software\microsoft\internet explorer\main\
    • enable browser extensions = 7562617
    • search bar = http://www.google.com/ie
    • search page = http://www.google.com
    • start page = http://www.google.com

    • The applications created the following network connection(s):

  • http
    • hxxp://172.16.199.200/*****************************
    • hxxp://172.16.199.200/sasearch/************
    • hxxp://172.16.199.200/sasearch/*************

    • 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

    United States - English