ThreatExpert Report: Backdoor.Graybird, Generic BackDoor.xa, Mal/Behav-058..

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Submission Summary:

Submission details:

Submission received: 30 September 2012, 09:08:08
Processing time: 7 min 45 sec
Submitted sample:

File MD5: 0x59E8C1DFB6217163CCF63EEE0978255F
File SHA-1: 0xAF350F51E0423EA19443963863FCE8EAEFF1B3DB
Filesize: 677,376 bytes
Alias:

Backdoor.Graybird [Symantec]
Generic BackDoor.xa [McAfee]
Mal/Behav-058 [Sophos]
Backdoor:Win32/Fynloski.A [Microsoft]
Trojan.Win32.CDur [Ikarus]

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	[file and pathname of the sample #1]	677,376 bytes	MD5: 0x59E8C1DFB6217163CCF63EEE0978255F SHA-1: 0xAF350F51E0423EA19443963863FCE8EAEFF1B3DB	Backdoor.Graybird [Symantec] Generic BackDoor.xa [McAfee] Mal/Behav-058 [Sophos] Backdoor:Win32/Fynloski.A [Microsoft] Trojan.Win32.CDur [Ikarus]

Memory Modifications

There was a new process created in the system:

Process Name	Process Filename	Main Module Size
[filename of the sample #1]	[file and pathname of the sample #1]	737,280 bytes

Registry Modifications

The following Registry Key was created:

HKEY_CURRENT_USER\Software\DC3_FEXEC

Other details

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

France

To mark the presence in the system, the following Mutex object was created:

DCMUTEX

The following port was open in the system:

Port	Protocol	Process
1033	TCP	[file and pathname of the sample #1]

Outbound traffic (potentially malicious)

There was an outbound traffic produced on port 1604:

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