Trojan-FCFL!850C8C948​B34!850C8C948B34

This page shows details and results of our analysis on the malware Trojan-FCFL!850C8C948B34!850C8C948B34

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

659456

Description Added

2013-06-17

Description Modified

2013-06-17

Malware Proliferation

Characteristics

This is a Trojan

File PropertiesProperty Values
McAfee DetectionTrojan-FCFL!850C8C948B34
Length659456 bytes
MD5850c8c948b34b4e39bc16f8fcf5d0285
SHA198dfb75d2e0466d7fb00fe73ab4a7edc175dc16c


Other Common Detection Aliases

Company NamesDetection Names
avastWin32:Malware-gen
aviraTR/Crypt.XPACK.Gen
KasperskyTrojan.Win32.Agentb.aavg
FortiNetW32/Simda.BC!tr
EsetWin32/Simda.B
normanwinpe/Simda.HZM
SophosMal/Encpk-ADD

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


ActivitiesRisk Levels
Adds a component to or modifies the network stack.Medium
Enumerates many system files and directories.Low
Enumerates process listLow
Adds or modifies Internet Explorer cookiesLow
No digital signature is presentInformational


McAfee ScansScan Detections
McAfee BetaTrojan-FCFL!850C8C948B34
McAfee SupportedTrojan-FCFL!850C8C948B34



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:

12.tmp

The following files have been added to the system:

  • %APPDATA%\q1wSK17.exe

The following registry elements have been created:

  • HKEY_CURRENT_USER\SOFTWARE\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\INTERNET EXPLORER\SEARCHSCOPES\
  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\
  • HKEY_USERS\.DEFAULT\SOFTWARE\MICROSOFT\INTERNET EXPLORER\SEARCHSCOPES\

The following registry elements have been changed:

  • HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUNONCE\Q1WSK17 = "%APPDATA%\q1wSK17.exe" opt
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\CONTROL\SESSION MANAGER\PENDINGFILERENAMEOPERATIONS = \??\%TEMP%\12.tmp
  • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet\SERVICES\TCPIP\PARAMETERS\INTERFACES\{2AE259D0-AEFC-43D6-A9A2-8742428A5DA1}\NAMESERVER = 8.8.8.8,[local subnet].1

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