ThreatExpert Report: Backdoor.SdBot.FNT, W32.Spybot.Worm, Backdoor.Win32.SdBot.dzk..

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Submission Summary:

Submission details:

Submission received: 6 December 2011, 15:12:23
Processing time: 9 min 16 sec
Submitted sample:

File MD5: 0xEC3712E62A5D480541942AB876593D63
File SHA-1: 0x3BD9B1FD90DD9BC67D7D8D6BB0741FF3DCB79F24
Filesize: 28,160 bytes
Alias:

Backdoor.SdBot.FNT [PCTools]
W32.Spybot.Worm [Symantec]
Backdoor.Win32.SdBot.dzk [Kaspersky Lab]
W32/Sdbot.worm.gen.a [McAfee]
Mal/IRCBot-C [Sophos]
Backdoor:Win32/IRCbot [Microsoft]
Virus.Win32.IRCBot.BSX [Ikarus]
Win32/IRCBot.worm.variant [AhnLab]

Summary of the findings:

What's been found	Severity Level
Communication with a remote IRC server.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

Technical Details:

The new window was created, as shown below:

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Possible Security Risk

Attention! The following threat categories were identified:

Threat Category	Description
	A malicious backdoor trojan that runs in the background and allows remote access to the compromised system
	A network-aware worm that attempts to replicate across the existing network(s)

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] %Windir%\winudpmgr.exe	28,160 bytes	MD5: 0xEC3712E62A5D480541942AB876593D63 SHA-1: 0x3BD9B1FD90DD9BC67D7D8D6BB0741FF3DCB79F24	Backdoor.SdBot.FNT [PCTools] W32.Spybot.Worm [Symantec] Backdoor.Win32.SdBot.dzk [Kaspersky Lab] W32/Sdbot.worm.gen.a [McAfee] Mal/IRCBot-C [Sophos] Backdoor:Win32/IRCbot [Microsoft] Virus.Win32.IRCBot.BSX [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
winudpmgr.exe	%Windir%\winudpmgr.exe	311,296 bytes
[filename of the sample #1]	[file and pathname of the sample #1]	311,296 bytes

Registry Modifications

The newly created Registry Value is:

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]

Windows UDP Control Center = "winudpmgr.exe"

so that winudpmgr.exe runs every time Windows starts

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