ThreatExpert Report: Trojan.Lineage.Gen!Pac.3, Trojan.Packed.NsAnti..

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Submission Summary:

Submission details:

Submission received: 8 June 2009, 22:05:03
Processing time: 10 min 31 sec
Submitted sample:

File MD5: 0xC7F6B78C10AEE3608315D82CD8E36A08
File SHA-1: 0x68770591329C80FD5D8EF30EE1B4580836B67A8E
Filesize: 105,325 bytes
Alias:

Trojan.Lineage.Gen!Pac.3 [PCTools]
Trojan.Packed.NsAnti [Symantec]
Trojan-GameThief.Win32.OnLineGames.ngm [Kaspersky Lab]
PWS-Gamania.gen.a [McAfee]
Mal_NSAnti-1 [Trend Micro]
Mal/EncPk-CE [Sophos]
Worm:Win32/Taterf.CN [Microsoft]
Win-Trojan/KorGameHack.105325 [AhnLab]

Summary of the findings:

What's been found	Severity Level
Sets the drive to autoplay by creating autorun.inf file in its root directory. If the drive is shared across the network then other remote computers can be infected any time they try to access this share.
Downloads/requests other files from Internet.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

Attention! Characteristics of the following security risks were identified in the system:

Security Risk	Description
Trojan-PWS.Onlinegames.BS	Trojan.PWS.Onlinegames.BS is a Trojan that will start itself automatically and steal passwords of onlinegames on the infected machines.
Trojan-PWS.OnlineGames.ARUN	Trojan-PWS.OnlineGames.ARUN attempts to steal password information associated to popular online games such as MapleStory, Legend of Mir and World of Warcraft. It has the ability to spread itself via removable disk such as USB drives.

Attention! The following threat categories were identified:

Threat Category	Description
	A network-aware worm that attempts to replicate across the existing network(s)
	A code with the rootkit-specific techniques designed to hide the software presence in the system
	A hacktool that could be used by attackers to break into a system
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
	A keylogger program that can capture all user keystrokes (including confidential details such username, password, credit card number, etc.)

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	c:\autorun.inf	319 bytes	MD5: 0x3F11F1940C6E520CB0C67AE0A76660DA SHA-1: 0xA6D12BE1751A01FCC7260D2E4DF79AAFBC8C9B13	Worm.Win32.AutoRun.bnq [Kaspersky Lab] Mal/AutoInf-A, Mal/AutoInf-B [Sophos] Worm.Win32.AutoRun [Ikarus]
2	%Temp%\chjbrh.dll	31,704 bytes	MD5: 0x8951EF2175217B174DFC63178B8CD931 SHA-1: 0x299CE48092D6BA564A0A3DABFBC62477AABB46F8	Trojan.Onlinegames.Gen!Pac.73 [PCTools] Hacktool.Rootkit [Symantec] Rootkit.Win32.Agent.tq [Kaspersky Lab] PWS-Gamania.gen.a [McAfee] Mal/EncPk-CE [Sophos] VirTool:Win32/Vanti.gen!D [Microsoft] Worm.Win32.AutoRun [Ikarus] Win-Trojan/MalPacked.Gen [AhnLab]
3	c:\u.bat %System%\amvo.exe [file and pathname of the sample #1]	105,325 bytes	MD5: 0xC7F6B78C10AEE3608315D82CD8E36A08 SHA-1: 0x68770591329C80FD5D8EF30EE1B4580836B67A8E	Trojan.Lineage.Gen!Pac.3 [PCTools] Trojan.Packed.NsAnti [Symantec] Trojan-GameThief.Win32.OnLineGames.ngm [Kaspersky Lab] PWS-Gamania.gen.a [McAfee] Mal_NSAnti-1 [Trend Micro] Mal/EncPk-CE [Sophos] Worm:Win32/Taterf.CN [Microsoft] Win-Trojan/KorGameHack.105325 [AhnLab]
4	%System%\amvo0.dll %System%\amvo1.dll	54,784 bytes	MD5: 0x2F3B3F725BCF68AE0E4B0D56F2B64A98 SHA-1: 0x52302272041EF34A0B598452F51F3FB1A540C2D2	Trojan.Lineage.Gen!Pac.3 [PCTools] Infostealer.Gampass [Symantec] Trojan-GameThief.Win32.OnLineGames.nij [Kaspersky Lab] PWS-Gamania.gen.a [McAfee] Mal_NSAnti-1 [Trend Micro] Mal/EncPk-CE [Sophos] Worm:Win32/Taterf.B.dll [Microsoft] Trojan-GameThief.Win32.OnLineGames [Ikarus] Win-Trojan/OnlineGameHack.54784 [AhnLab]

Notes:

%Temp% is a variable that refers to the temporary folder in the short path form. By default, this is C:\Documents and Settings\[UserName]\Local Settings\Temp\ (Windows NT/2000/XP).
%System% is a variable that refers to the System folder. By default, this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).

Memory Modifications

There were new processes created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	184,320 bytes
iexplore.exe	%ProgramFiles%\Internet Explorer\iexplore.exe	102,400 bytes
amvo.exe	%System%\amvo.exe	184,320 bytes

Notes:

%ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

Registry Modifications

The newly created Registry Value is:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]

amva = "%System%\amvo.exe"

so that amvo.exe runs every time Windows starts

Other details

The following Internet download was started (the retrieved bits are saved into the local file):

URL to be downloaded	Filename for the downloaded bits
http://www.om7890.com/mf2/help.rar	%Temp%\help.rar

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