Virus:TR/Drop.Auto.284172
Date discovered:08/07/2008
Type:Trojan
Subtype:Dropper
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:No
IVDF version:7.00.05.62 - Tuesday, July 8, 2008

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Symantec: W32.SillyFDC
   •  Mcafee: Generic Downloader.x
   •  Sophos: W32/AutoIt-I
   •  Panda: Trj/Autoit.CJ
   •  Grisoft: Worm/Autoit.BFQ
   •  Eset: Win32/Autoit.CT
   •  Bitdefender: Trojan.Autoit.TU


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


Side effects:
   • Downloads files
   • Drops files
   • Registry modification

 Files  It creates the following directory:
   • %PROGRAM FILES%\Common Files\Microsoft Shared\HTMLView

– %PROGRAM FILES%\Common Files\Microsoft Shared\HTMLView\htmlsupport%number%.exe Furthermore it gets executed after it was fully created.
– %PROGRAM FILES%\Common Files\Microsoft Shared\HTMLView\htmlview.exe
– %PROGRAM FILES%\Common Files\Microsoft Shared\HTMLView\sobsoftex.dll
– %PROGRAM FILES%\Common Files\Microsoft Shared\HTMLView\win.exe



It tries to download some files:

– The locations are the following:
   • http://rosk.ic.cz/htmlsupport/**********
   • http://rosk.ic.cz/htmlsupport/**********
   • http://rosk.ic.cz/htmlsupport/**********

 Registry One of the following values is added in order to run the process after reboot:

–  [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "HTMLSupport"="%HOME%\Application Data\Microsoft\Internet Explorer\htmlsupport%number%.exe"

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

Description inserted by Petre Galan on Thursday, July 2, 2009
Description updated by Petre Galan on Friday, July 10, 2009

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