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Date discovered:04/10/2009
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:159.590 Bytes
MD5 checksum:90e02a26204ade7771acf7e8521bdf09
IVDF version:

 General Methods of propagation:
   • Autorun feature
   • Local network

   •  Mcafee: W32/Conficker.worm virus
   •  Sophos: W32/Confick-C
   •  Bitdefender: Win32.Worm.Downadup.Gen
   •  Panda: W32/Conficker.C.worm
   •  Eset: Win32/Conficker.AA

Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following locations:
   • %SYSDIR%\qepdjla.dll
   • %drive%\RECYCLER\qepdjla.dll

It deletes the initially executed copy of itself.

The following file is created:

%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%

 Registry The following registry keys are added in order to load the service after reboot:

– [HKLM\SYSTEM\CurrentControlSet\Services\fddshoys]
   • "Description"="Manages IP security policy and starts the ISAKMP/Oakley (IKE) and the IP security driver."
   • "DisplayName"="Boot Windows"
   • "ImagePath"="%SystemRoot%\system32\svchost.exe -k netsvcs"
   • "ObjectName"="LocalSystem"

The following registry key is added:

– [HKLM\SYSTEM\CurrentControlSet\Services\fddshoys\Parameters]
   • "ServiceDll"="%SYSDIR%\qepdjla.dll"

 Network Infection In order to ensure its propagation the malware attemps to connect to other machines as described below.

It makes use of the following Exploits:
– MS04-007 (ASN.1 Vulnerability)
– MS06-040 (Vulnerability in Server Service)

Remote execution:
–It attempts to schedule a remote execution of the malware, on the newly infected machine. Therefore it uses the NetScheduleJobAdd function.

 Injection – It injects a backdoor routine into a process.

    Process name:
   • svchost.exe

 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Descrição enviada por Petre Galan em quinta-feira, 23 de setembro de 2010
Descrição atualizada por Petre Galan em quinta-feira, 23 de setembro de 2010

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