Submission Summary:

• Submission details:
• Submission received: 16 July 2009, 09:50:05
• Processing time: 6 min 19 sec
• Submitted sample:
• File MD5: 0x53FD83615AC4AB21FAA6867ECFDC62EE
• File SHA-1: 0xC368220F44CF2A4144953A6BCCE0C4A902D9DC19
• Filesize: 25,988 bytes
• Alias & packer info:
• Trojan.Dropper [Symantec]
• Worm.Win32.AutoRun.acdm [Kaspersky Lab]
• New Malware.aj [McAfee]
• Mal/Emogen-F [Sophos]
• Trojan-PWS.Win32.OnLineGames [Ikarus]
• Packed/Upack [AhnLab]
• packed with: PE_Patch [Kaspersky Lab]

• Summary of the findings:

What's been found	Severity Level
Downloads/requests other files from Internet.
Packed with a packer that is known to be used by malware (e.g. to complicate threat analysis or detection).
Contains characteristics of an identified security risk.

Technical Details:

Possible Security Risk

• Attention! Characteristics of the following security risk was identified in the system:

Security Risk	Description
Worm.AutoRun.WHY	Worm.Autorun.WHY is a threat that spread through removable drives and it can run in the background without the knowledge of the user.

• Attention! The following threat categories were identified:

Threat Category	Description
	A keylogger program that can capture all user keystrokes (including confidential details such username, password, credit card number, etc.)
	A network-aware worm that attempts to replicate across the existing network(s)
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system

File System Modifications

• The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Temp%\w.exe	2,184 bytes	MD5: 0x966CFEE642B76F14B511DA24BEC0E51F SHA-1: 0x3C169B08531148C22ACE696229FBC032BDCFC4E9	Worm.AutoRun.WHY [PCTools] Infostealer.Gampass [Symantec] Generic.dx [McAfee] Mal/TibsPk-A [Sophos] Trojan:Win32/Meredrop [Microsoft] Virus.Win32.Trojan [Ikarus] Packed/Upack [AhnLab] packed with PE_Patch [Kaspersky Lab]
2	c:\good.bat	51 bytes	MD5: 0x43BC67DB587D96F1BDF63C24F31F96B0 SHA-1: 0x95591A166B17BEA01A0A02B4E24AB5B5A16137C4	Trojan.BAT.KillAV.ec [Kaspersky Lab] Trojan.BAT.KillAV [Ikarus]
3	%ProgramFiles%\Internet Explorer\smss.exe [file and pathname of the sample #1]	25,988 bytes	MD5: 0x53FD83615AC4AB21FAA6867ECFDC62EE SHA-1: 0xC368220F44CF2A4144953A6BCCE0C4A902D9DC19	Trojan.Dropper [Symantec] Worm.Win32.AutoRun.acdm [Kaspersky Lab] New Malware.aj [McAfee] Mal/Emogen-F [Sophos] Trojan-PWS.Win32.OnLineGames [Ikarus] Packed/Upack [AhnLab] packed with PE_Patch [Kaspersky Lab]
4	%ProgramFiles%\ltass.exe	38,056 bytes	MD5: 0x516B6363B5789AABD136C790D5BBFD54 SHA-1: 0xF38E54E2EAE59B4A843906EE9A5218BEE7CB20C1	Worm.AutoRun.WHY [PCTools] Trojan.Dropper [Symantec] Backdoor.Win32.Hupigon.eqzg [Kaspersky Lab] BackDoor-AWQ.b [McAfee] Mal/Behav-328, Mal/Behav-024, Mal/Behav-214, Mal/Emogen-I, Mal/Emogen-Z, Mal/Dropper-G [Sophos] Trojan:Win32/Bepdro.A [Microsoft] Backdoor.Win32.HacDef.073.B [Ikarus] Win-Trojan/Hupigon.12024764 [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).
• %ProgramFiles% is a variable that refers to the Program Files folder. A typical path is C:\Program Files.

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]	135,168 bytes
ltass.exe	%ProgramFiles%\ltass.exe	57,344 bytes

Other details

• Analysis of the file resources indicate the following possible country of origin:

	China

• The data identified by the following URL was then requested from the remote web server:
• http://passportso.baidu.com/checkuser/q