Submission Summary:

• Submission details:
• Submission received: 20 February 2009, 14:02:11
• Processing time: 11 min 43 sec
• Submitted sample:
• File MD5: 0x7CE96A0ED4D71C26D2C377DD331E4466
• File SHA-1: 0x275A0F52374553C0B3ED17C27AE257CEE8868D95
• Filesize: 17,920 bytes
• Alias & packer info:
• Rootkit.QQHelp.Gen.2 [PCTools]
• Backdoor.Trojan [Symantec]
• Virus.Win32.Agent.BQC [Ikarus]
• packed with: PE_Patch.UPX [Kaspersky Lab]

• Summary of the findings:

What's been found	Severity Level
Produces outbound traffic.
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 malicious backdoor trojan that runs in the background and allows remote access to the compromised system

File System Modifications

• The following file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%System%\instoll.exe [file and pathname of the sample #1]	17,920 bytes	MD5: 0x7CE96A0ED4D71C26D2C377DD331E4466 SHA-1: 0x275A0F52374553C0B3ED17C27AE257CEE8868D95	Rootkit.QQHelp.Gen.2 [PCTools] Backdoor.Trojan [Symantec] Virus.Win32.Agent.BQC [Ikarus] packed with PE_Patch.UPX [Kaspersky Lab]

• Note:
• %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 was a new process created in the system:

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{120CE2B4-865C-EF6A-0307-030108080102}
• HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_RESDR32
• HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_RESDR32\0000
• HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\resdr32

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{120CE2B4-865C-EF6A-0307-030108080102}]
• StubPath = "%System%\instoll.exe"

so that instoll.exe runs every time Windows starts

• [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_RESDR32\0000]
• Service = "resdr32"
• Legacy = 0x00000001
• ConfigFlags = 0x00000000
• Class = "LegacyDriver"
• ClassGUID = "{8ECC055D-047F-11D1-A537-0000F8753ED1}"
• DeviceDesc = "resdr32"
• [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\Root\LEGACY_RESDR32]
• NextInstance = 0x00000001
• [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\resdr32]
• Type = 0x00000001
• ErrorControl = 0x00000001
• Start = 0x00000001

Other details

• To mark the presence in the system, the following Mutex object was created:
• )!Vjjj.I4

• The following Host Name was requested from a host database:
• mmwbzhij.meibu.com

• There was registered attempt to establish connection with the remote host. The connection details are:

Outbound traffic (potentially malicious)

• There was an outbound traffic produced on port 8585: