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Virus:TR/Autoit.abc.4
Date discovered:22/10/2009
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:696.089 Bytes
MD5 checksum:52776e4710c0fb306a12cc53264f2f21
IVDF version:7.01.06.139 - Thursday, October 22, 2009

 General Aliases:
   •  Mcafee: W32/Renocide
   •  Panda: W32/Harakit.D
   •  Eset: Win32/AutoRun.Autoit.BT
   •  Bitdefender: Trojan.Generic.2600459


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


Side effects:
   • Drops malicious files
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following location:
   • %SYSDIR%\csrcs.exe



It deletes the initially executed copy of itself.



It deletes the following file:
   • C:\Temp\suicide.bat



The following files are created:

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

%TEMPDIR%\suicide.bat Furthermore it gets executed after it was fully created. This batch file is used to delete a file.

 Registry The following registry keys are added:

[HKLM\Software\Microsoft\DRM\amty]
   • "dreg"="408406541BC5BBE4DC197A2A0C46B9ACF2F90D96B151D7C7BCBD177641EE95F562E634D70EB70FB65FC8FBF0EC31261C8626D05B1ED70CC881A48DA07A7E1A99"
   • "exp1"="408406541BC5BBE4DC197A2A0C46B9A9F2F90D96B151D7C7BCBD177641EE95F6"
   • "fix"=""
   • "fix1"="1"
   • "ilop"="1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\
   Run]
   • "csrcs"="%SYSDIR%\csrcs.exe"



The following registry keys are changed:

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "Shell"="Explorer.exe csrcs.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x00000002
   • "ShowSuperHidden"=dword:0x00000000
   • "SuperHidden"=dword:0x00000000

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\
   Folder\Hidden\SHOWALL]
   New value:
   • "CheckedValue"=dword:0x00000001

 Backdoor The following ports are opened:

uyhnmk.jp**********.ph on TCP port 7872
3h58gkl6.tr**********.com on TCP port 9392

 Miscellaneous  Checks for an internet connection by contacting the following web sites:
   • http://www.whatismyip.com/automation/**********
   • http://checkip.d**********/?rnd1=64403.1400432929&rnd2=49465.6987388073

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

Açıklamayı yerleştiren Petre Galan tarihinde 11 Mart 2010 Perşembe
Açıklamayı güncelleyen: Petre Galan tarihinde 12 Mart 2010 Cuma

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