ThreatExpert Report: Trojan-PWS.OnlineGames.ARUN, W32.Gammima.AG, Packed.Win32.Krap.b..

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Submission Summary:

Submission details:

Submission received: 18 February 2010, 16:46:50
Processing time: 8 min 39 sec
Submitted sample:

File MD5: 0xF1FFC2B94B6CADC5DDD7CEEBD82B1D45
File SHA-1: 0xB6CFB49E35ED49EB14ABED700C9C7EFEAE6C6574
Filesize: 103,953 bytes
Alias:

Trojan-PWS.OnlineGames.ARUN [PCTools]
W32.Gammima.AG [Symantec]
Packed.Win32.Krap.b [Kaspersky Lab]
PWS-Gamania.gen.a [McAfee]
TSPY_ONLINEG.XOZ [Trend Micro]
Mal/EncPk-CE, Mal/Behav-164 [Sophos]
Worm:Win32/Taterf.AA [Microsoft]
Packed.Win32.Krap [Ikarus]
Win-Trojan/OnlineGameHack.103953 [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! The following threat category was identified:

Threat Category	Description
	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	587 bytes	MD5: 0x9799579D2677590687FA6D6A93A991D8 SHA-1: 0x13E61A138A16BF62FA75151E03B1AB58A80C6E34	Trojan-GameThief.Win32.OnLineGames.yky [Kaspersky Lab] Generic!atr [McAfee] Mal/AutoInf-B, Mal/AutoInf-A [Sophos] Trojan-GameThief.Win32.OnLineGames [Ikarus] BAT/OnlineGameHack [AhnLab]
2	%Temp%\4vepxtuf.dll	27,541 bytes	MD5: 0xF0AE06A3F084D97841BEB9C5504325A8 SHA-1: 0xB05CCE331857648763811886C60EBC5D40DA580E	Trojan.Lineage.Gen!Pac.3 [PCTools] W32.Gammima.AG [Symantec] Trojan-GameThief.Win32.OnLineGames.yky [Kaspersky Lab] PWS-Gamania.gen.a [McAfee] TSPY_ONLINEG.IBU [Trend Micro] Mal/EncPk-CE [Sophos] VirTool:WinNT/Vanti.gen!C [Microsoft]
3	c:\gjn2pjlw.exe %System%\amvo.exe [file and pathname of the sample #1]	103,953 bytes	MD5: 0xF1FFC2B94B6CADC5DDD7CEEBD82B1D45 SHA-1: 0xB6CFB49E35ED49EB14ABED700C9C7EFEAE6C6574	Trojan-PWS.OnlineGames.ARUN [PCTools] W32.Gammima.AG [Symantec] Packed.Win32.Krap.b [Kaspersky Lab] PWS-Gamania.gen.a [McAfee] TSPY_ONLINEG.XOZ [Trend Micro] Mal/EncPk-CE, Mal/Behav-164 [Sophos] Worm:Win32/Taterf.AA [Microsoft] Packed.Win32.Krap [Ikarus] Win-Trojan/OnlineGameHack.103953 [AhnLab]
4	%System%\amvo0.dll %System%\amvo1.dll	70,656 bytes	MD5: 0x477A12E6587F9B14608E2D7C160CEAF8 SHA-1: 0x9DFA8D6DA0755713C2E70713D8E098DEEC41B2B9	Trojan.Lineage.Gen!Pac.3 [PCTools] Infostealer.Gampass [Symantec] Packed.Win32.Krap.b [Kaspersky Lab] PWS-Gamania.gen.a [McAfee] TSPY_ONLINEG.CPJ [Trend Micro] Mal/EncPk-CE [Sophos] Worm:Win32/Taterf.A.dll [Microsoft] Win-Trojan/OnlineGameHack.70656.F [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
amvo.exe	%System%\amvo.exe	196,608 bytes
iexplore.exe	%ProgramFiles%\Internet Explorer\iexplore.exe	102,400 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	196,608 bytes
gjn2pjlw.exe	c:\gjn2pjlw.exe	196,608 bytes

Notes:

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

The following module was loaded into the address space of other process(es):

Module Name	Module Filename	Address Space Details
amvo0.dll	%System%\amvo0.dll	Process name: explorer.exe Process filename: %Windir%\explorer.exe Address space: 0x1EA0000 - 0x1EC2000

Notes:

%Windir% is a variable that refers to the Windows installation folder. By default, this is C:\Windows or C:\Winnt.

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

The following Registry Value was modified:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL]

CheckedValue =

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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