W32/Hala!a2384eb54012

Overview

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then further propagate the virus. Although many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Minimum DAT

5716 (2009-08-21)

Updated DAT

5716 (2009-08-21)

Minimum Engine

5300.2777

File Length

114176

Description Added

2009-08-21

Description Modified

2009-08-21

Malware Proliferation

Characteristics

File Property	Property Value
FileName	Unavailable
McAfee Artemis	Artemis!a2384eb54012
McAfee Detection	W32/Hala
Length	114,176 bytes
CRC	D99B217F
MD5	A2384EB5401229EFBEB32BBBE5B87C5C
SHA1	A872FBEE9B64E3FECFDC77D1808E3E1F50CA3A02

Other Common Detection Aliases

Company Name	Detection Name
avast	Win32:Trojan-gen {Other}
AVG (GriSoft)	Win32/Hala.A
Avira	W32/Rectix.A
BitDefender	Win32.Almanah.A
clamav	W32.Hala
Dr.Web	Trojan.MulDrop.6435
Eset	Win32/Hala.A virus
FortiNet	W32/Hala.A
F-Prot	W32/Hala.A
Kaspersky	Virus.Win32.Hala.a
microsoft	virus:win32/hala.a
norman	w32/malware.adrw
panda	W32/Hala.A
rising	Win32.Hala.A
Sophos	W32/Hala-A
Symantec	W32.Almanahe.C!inf
Trend Micro	PE_RECTIX.A
vba32	Virus.Win32.Hala.a
V-Buster	Win32.Hala.A (mutant)
Vet (Computer Associates)	Win32/Hala.A

Avert® Labs has observed the following system activities:

Activity	Risk Level
Modifies memory of other processes	Critical
Enumerates running processes	Medium
Uses shared memory of other processes	Low
Writes executable in the windows folder	Low
Creates registry keys and data values to persist on OS reboot	Informational
Performs a shell execute of downloaded or existing files	Informational
Registers DLLs	Informational

Other detections that have been observed.

FileName	McAfee Supported
%WINDIR%\system32\d9dx.dll	Generic Downloader.g

This sample can be identified by the following symptoms.

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\a2384eb5401229efbeb32bbbe5b87c5c_.exe

The following files have been added to the system:

%WINDIR%\system32\d3d8xof.dll

%WINDIR%\system32\d9dx.dll

The following registry elements have been created:

HKEY_LOCAL_MACHINE\software\classes\clsid\{da1910de-aa86-4ed0-874b-2924e38bad99}\inprocserver32\

(default) = c:\windows\system32\d3d8xof.dll
threadingmodel = apartment

HKEY_LOCAL_MACHINE\software\google\

checkbkflags = 306507

The following registry elements have been changed:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\currentversion\shellserviceobjectdelayload\

directx = {da1910de-aa86-4ed0-874b-2924e38bad99}

The applications created the following network connection(s):

http

hxxp://****************************

Symptoms

This symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

Method of Infection

Viruses are self-replicating. They are often spread by a network or by transmission to a removable medium such as a removable disk, writable CD, or USB drive. Viruses may also spread by infecting files on a network file system or a file system that is shared by another computer.

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.

Threat Detail