DR/Sdbot.150826 - Dropper

See also

Summary

Full description

Statistics

Virus:	DR/Sdbot.150826
Date discovered:	11/10/2006
Type:	Dropper
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	150.826 Bytes
MD5 checksum:	b22951090698cbb0ae863704ec7b57e8
VDF version:	6.35.01.196 - Fri, 08 Sep 2006 07:32 (GMT+1)
IVDF version:	6.35.01.200 - Fri, 08 Sep 2006 14:00 (GMT+1)

General Method of propagation:
   • No own spreading routine

Alias:
   • TrendMicro: TROJ_MULTIDRP.EW

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Drops malicious files
   • Registry modification

Files It creates the following directory:
• c:\winnt\system32

The following files are created:

– c:\winnt\system32\hydroco.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Proxy.Ranky.FX

– c:\winnt\system32\inflamt.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: WORM/IRCBot.31392

Registry The following registry key is added:

– [HKCU\Software\WinRAR SFX]
• "C%%WINNT%SYSTEM32%"="%SYSDIR%\"

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

See a brief description here.

Description inserted by Monica Ghitun on Wed, 11 Oct 2006 14:54 (GMT+1)
Description updated by Andrei Ivanes on Fri, 27 Oct 2006 16:34 (GMT+1)

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