Generic Downloader.x!32839f96a19c

This page shows details and results of our analysis on the malware Generic Downloader.x!32839f96a19c

Download Current DAT: 6618

Threat Detail

Malware Type: Trojan

Malware Sub-type: Downloader

Discovery Date: 2009-04-15

Next Steps:

Overview
Characteristics
Symptoms
Method of Infection
Removal

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

5584 (2009-04-14)

Updated DAT

5584 (2009-04-14)

Minimum Engine

5300.2777

File Length

93184

Description Added

2009-04-15

Description Modified

2009-04-15

Malware Proliferation

Characteristics

File Property	Property Value
FileName	hardco~1.exe
McAfee Artemis	Artemis!32839f96a19c
McAfee Detection	Generic Downloader.x
Length	93,184 bytes
CRC	BAF4A32D
MD5	32839F96A19C458EEA8B69E311A71EB1
SHA1	B06ADE4CA863EF39C22CB7F714B9BEB515FDCC4F

Other Common Detection Aliases

Company Name	Detection Name
avast	Win32:Trojan-gen {Other}
Avira	TR/Dldr.Tracur.A.3
BitDefender	Trojan.Generic.1398244
Dr.Web	~Trojan.Packed.338
eSafe (Alladin)	Suspicious File [100]
Eset	Win32/Agent.OAF
FortiNet	W32/Dloader.X!tr
Kaspersky	P2P-Worm.Win32.Nugg.ah
microsoft	TrojanDownloader:Win32/Tracur.A
norman	tibs.daqt
panda	Generic Trojan
Sophos	Mal/Generic-A
Symantec	Trojan Horse
Trend Micro	TROJ_TRACUR.A
Vet (Computer Associates)	Win32/Vundo.CAY

Avert® Labs has observed the following system activities:

Activity	Risk Level
Enumerates open windows	Medium
Enumerates running processes	Medium
Uses shared memory of other processes	Low
Performs a shell execute of downloaded or existing files	Informational

Other detections that have been observed.

FileName	McAfee Supported
%WINDIR%\system32\fldrclnr32.dll	Downloader-BMN

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 were analyzed:

%USERPROFILE%\local settings\temp\hardco~1.exe

The following files have been added to the system:

%USERPROFILE%\application data\55274-640-2001945-23725517c.manifest

%USERPROFILE%\application data\55274-640-2001945-23725517o.manifest

%USERPROFILE%\application data\55274-640-2001945-23725517p.manifest

%USERPROFILE%\application data\55274-640-2001945-23725517s.manifest

%WINDIR%\system32\fldrclnr32.dll

The following registry elements have been created:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows nt\currentversion\winlogon\notify\74630177517\

dllname = c:\windows\system32\fldrclnr32.dll
startup = eventstartup

The following registry elements have been changed:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows nt\currentversion\Windows\

appinit_dlls = c:\windows\system32\fldrclnr32.dll

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\currentversion\explorer\

74630177 = -572606576

The applications created the following network connection(s):

http

hxxp://85.17.93.190/conn
/**********************************************************************
***********************************************************************
*****************
hxxp://chewinggym.com/conn
/**********************************************************************
***********************************************************************
*****************

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.

Generic Downloader.x!32839f96​a19c