Submission Summary:

• Submission details:
• Submission received: 24 September 2012, 08:56:31
• Processing time: 7 min 45 sec
• Submitted sample:
• File MD5: 0xAF868CDFBBBB1C86E9EE804F37D8355E
• File SHA-1: 0xC7217B87062809CB77657C38079299B23BAEE008
• Filesize: 128,303 bytes
• Alias:
• Suspicious.IRCBot [Symantec]
• Backdoor.Win32.IRCBot.zl [Kaspersky Lab]
• W32/Sdbot.worm [McAfee]
• WORM_NUCRP.GEN [Trend Micro]
• Backdoor:Win32/Rbot.gen!F [Microsoft]
• Packer.Mutilator [Ikarus]
• Win32/IRCBot.worm.variant [AhnLab]

Technical Details:

Possible Security Risk

• Attention! The following threat categories were identified:

Threat Category	Description
	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 file was created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	%Windir%\svchost32.exe [file and pathname of the sample #1]	128,303 bytes	MD5: 0xAF868CDFBBBB1C86E9EE804F37D8355E SHA-1: 0xC7217B87062809CB77657C38079299B23BAEE008	Suspicious.IRCBot [Symantec] Backdoor.Win32.IRCBot.zl [Kaspersky Lab] W32/Sdbot.worm [McAfee] WORM_NUCRP.GEN [Trend Micro] Backdoor:Win32/Rbot.gen!F [Microsoft] Packer.Mutilator [Ikarus] Win32/IRCBot.worm.variant [AhnLab]

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

Memory Modifications

• There were new processes created in the system:

Process Name	Process Filename	Main Module Size
svchost32.exe	%Windir%\svchost32.exe	4,096 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	4,096 bytes

Registry Modifications

• The following Registry Keys were created:
• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
• HKEY_CURRENT_USER\Software\Microsoft\OLE

• The newly created Registry Values are:
• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
• Microsoft = "svchost32.exe"

so that svchost32.exe runs every time Windows starts

• [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices]
• Microsoft = "svchost32.exe"

so that svchost32.exe runs every time Windows starts

• [HKEY_CURRENT_USER\Software\Microsoft\OLE]
• Microsoft = "svchost32.exe"

Other details

• To mark the presence in the system, the following Mutex object was created:
• nzm+wis+vnc

• The following ports were open in the system:

• The following Host Names were requested from a host database:
• 192.5.5.241
• pelko.biz.tm
• 127.0.0.2
• 127.0.0.111
• 127.0.x.x
• 127.0.105.134

• There were registered attempts to establish connection with the remote hosts. The connection details are:

Outbound traffic (potentially malicious)

• Attention! There was a new connection established with a remote IRC Server. The generated outbound IRC traffic is provided below: