ThreatExpert Report: Worm:Win32/Hamweq.A

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Submission Summary:

Submission details:

Submission received: 22 September 2012, 02:01:29
Processing time: 7 min 41 sec
Submitted sample:

File MD5: 0xA12ECD2DA5CBC89C6CFA5E177AB4434C
File SHA-1: 0x12B47C63C63ED23F5AA05B9DBD12DC6D25CEB8C4
Filesize: 64,512 bytes
Alias: Worm:Win32/Hamweq.A [Microsoft]

Technical Details:

Possible Security Risk

Attention! The following threat category was identified:

Threat Category	Description
	A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment

File System Modifications

The following files were created in the system:

#	Filename(s)	File Size	File Hash	Alias
1	c:\RECYCLER\R-1-5-21-1482476501-1644491937-682003330-1013\Desktop.ini	62 bytes	MD5: 0x7457A5DF1FF47C957ACF1FA000D7D9AD SHA-1: 0x69D2BBA827FD4DE0169419A0FDA280252B348514	(not available)
2	c:\RECYCLER\R-1-5-21-1482476501-1644491937-682003330-1013\hostsv.exe [file and pathname of the sample #1]	64,512 bytes	MD5: 0xA12ECD2DA5CBC89C6CFA5E177AB4434C SHA-1: 0x12B47C63C63ED23F5AA05B9DBD12DC6D25CEB8C4	Worm:Win32/Hamweq.A [Microsoft]

The following directory was created:

c:\RECYCLER\R-1-5-21-1482476501-1644491937-682003330-1013

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]	90,112 bytes
hostsv.exe	c:\recycler\r-1-5-21-1482476501-1644491937-682003330-1013\hostsv.exe	24,576 bytes

Registry Modifications

The newly created Registry Value is:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]

Taskman = "c:\RECYCLER\R-1-5-21-1482476501-1644491937-682003330-1013\hostsv.exe"

so that hostsv.exe runs every time Windows starts

Other details

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

Belgium

The following Host Names were requested from a host database:

192.5.5.241
tv.zaberno.com

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

Remote Host	Port Number
tv.zaberno.com	3324

Outbound traffic (potentially malicious)

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

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