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).
Communication with a remote IRC server.
Contains characteristics of an identified security risk.

 

Technical Details:

 

Possible Security Risk

Security RiskDescription
Backdoor.IRCBot.GEN Backdoor.IRCBot.GEN is a malicious backdoor trojan that runs in the background and allows remote access to the compromised system.

Threat CategoryDescription
A network-aware worm that attempts to replicate across the existing network(s)
A virus capable to modify other files by infecting, prepending, or overwriting them them with its own body
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 %System%\csrsc.exe 67,584 bytes MD5: 0x5EB5FDFE798F596708BF89D9D12468A6
SHA-1: 0x9E562D457ED3752859C1FF3430D3A334819519D5
Backdoor.Sdbot [Symantec]
Virus.Win32.Virut.at [Kaspersky Lab]
W32/Virut.gen.a [McAfee]
PE_VIRUT.AT [Trend Micro]
W32/Virut-Gen [Sophos]
Worm:Win32/Neeris.AN [Microsoft]
Worm.Win32.Neeris [Ikarus]
Win32/Virut [AhnLab]

 

Memory Modifications

Process NameProcess FilenameMain Module Size
csrsc.exe%System%\csrsc.exe589,824 bytes
[generic host process][generic host process filename]45,056 bytes
[filename of the sample #1][file and pathname of the sample #1]589,824 bytes

Service NameDisplay NameStatusService Filename
WinSpoolSvcWindows Spool Services"Stopped""%System%\csrsc.exe"

Service NameDisplay NameNew StatusService Filename
ImapiServiceIMAPI CD-Burning COM Service"Running"%System%\imapi.exe

 

Registry Modifications

 

Other details

Remote HostPort Number
127.0.0.3445
127.0.0.2445
127.0.0.4445
127.0.0.5445
127.0.0.6445
127.0.0.7445
127.0.0.8445
127.0.0.9445
127.0.0.10445
127.0.0.11445

 

 

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