Submission Summary:

What's been foundSeverity Level
A network-aware worm that uses known exploit(s) in order to replicate across vulnerable networks.
MS04-011: LSASS Overflow exploit - replication across TCP 445 (common for Sasser, Bobax, Kibuv, Korgo, Gaobot, Spybot, Randex, other IRC Bots).
Capability to delete the network shares C$, ADMIN$, IPC$, etc. A network-aware worm may secure shares in order to protect itself.
Proxy Trojan functionality that may allow a remote intruder to anonymously access the internet via the compromised computer.
Creates a startup registry entry.
Contains characteristics of an identified security risk.

 

Technical Details:

 

Possible Security Risk

Security RiskDescription
Backdoor.SpyBoter Backdoor.SpyBoter is a worm with backdoor capabilities which spreads via a network connection. It runs silently in the background waiting for commands from an attacker via IRC channels. It also allows the attacker to gain full access to the system and to log keystrokes.
Backdoor.Delf.TZ Backdoor.Delf.TZ runs silently in the backgound and can open up a port to allow attackers to gain access and control over the infected machine.

Threat CategoryDescription
A network-aware worm that attempts to replicate across the existing network(s)
A malicious trojan horse or bot that may represent security risk for the compromised system and/or its network environment
A spyware program that represents security risk for a local system
A malicious backdoor trojan that runs in the background and allows remote access to the compromised system

 

File System Modifications

#Filename(s)File SizeFile HashAlias
1 [file and pathname of the sample #1]
%System%\Wx.exe
80,384 bytes MD5: 0xADC4BBF7EF1011CB72F37A7890F3AF92 Backdoor.SpyBoter [PCTools]
W32.Spybot.Worm [Symantec]
Backdoor.Win32.Wootbot.gen [Kaspersky Lab]
W32/Sdbot.worm.gen.bj [McAfee]
WORM_WOOTBOT.GEN [Trend Micro]

 

Memory Modifications

Process NameProcess FilenameMain Module Size
Wx.exe%System%\wx.exe1,081,344 bytes

Service NameDisplay NameStatusService Filename
Win32Wintroller"Stopped""%System%\Wx.exe" -netsvcs

 

Registry Modifications

 

Other details

PortProtocolProcess
1035TCPWx.exe (%System%\Wx.exe)
15431TCPWx.exe (%System%\Wx.exe)

 

 

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