Virus:ADSPY/WinAD.AT.3
Date discovered:07/06/2005
Type:Trojan
In the wild:No
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:54.320 Bytes
MD5 checksum:f82a79f7c5b226a53864a3fe6406d9e5
VDF version:6.31.00.08

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Eset: Win32/Adware.WUpd
   •  Bitdefender: Trojan.Winad.AE


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


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

 Files It copies itself to the following location:
   • %PROGRAM FILES%\Media Access\MediaAccess.exe



It creates the following directory:
   • %PROGRAM FILES%\Media Access



The following file is created:

– Non malicious file:
   • %SYSDIR%\ide21201.vxd




It tries to download some files:

– The location is the following:
   • http://static.windupdates.com/Release/v20/**********
It is saved on the local hard drive under: %PROGRAM FILES%\Media Access\MediaAccK.exe Furthermore this file gets executed after it was fully downloaded. At the time of writing this file was not online for further investigation.

– The location is the following:
   • http://static.windupdates.com/Release/v20/**********
It is saved on the local hard drive under: %PROGRAM FILES%\Media Access\MediaAccC.dll At the time of writing this file was not online for further investigation.

– The location is the following:
   • http://static.windupdates.com/Release/v20/**********
It is saved on the local hard drive under: %PROGRAM FILES%\Media Access\Info.txt At the time of writing this file was not online for further investigation.

 Registry The following registry key is added in order to run the process after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "Media Access"="%PROGRAM FILES%\Media Access\MediaAccK.exe"



The following registry keys are added:

– [HKCR\AppID\{735C5A0C-F79F-47A1-8CA1-2A2E482662A8}]
   • @="LoaderX"

– [HKCR\AppID\LoaderX.EXE]
   • "AppID"="{735C5A0C-F79F-47A1-8CA1-2A2E482662A8}"

– [HKCR\MediaAccess.Installer]
   • @="Installer Class"

– [HKCR\MediaAccess.Installer\CLSID]
   • @="{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}"

– [HKCR\MediaAccess.Installer\CurVer]
   • @="MediaAccess.Installer"

– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}]
   • @="Installer Class"
   • "AppID"="{735C5A0C-F79F-47A1-8CA1-2A2E482662A8}"

– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}\
   Implemented Categories]
– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}\
   Implemented Categories\{7DD95801-9882-11CF-9FA9-00AA006C42C4}]
– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}\LocalServer32]
   • @="%PROGRAM FILES%\Media Access\MediaAccess.exe"

– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}\ProgID]
   • @="MediaAccess.Installer"

– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}\Programmable]
– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}\TypeLib]
   • @="{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}"

– [HKCR\CLSID\{1E5F0D38-214B-4085-AD2A-D2290E6A2D2C}\
   VersionIndependentProgID]
   • @="MediaAccess.Installer"

– [HKCR\TypeLib\{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}]
– [HKCR\TypeLib\{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}\1.0]
   • @="LoaderX 1.0 Type Library"

– [HKCR\TypeLib\{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}\1.0\0]
– [HKCR\TypeLib\{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}\1.0\0\win32]
   • @="%PROGRAM FILES%\Media Access\MediaAccess.exe"

– [HKCR\TypeLib\{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}\1.0\FLAGS]
   • @="0"

– [HKCR\TypeLib\{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}\1.0\HELPDIR]
   • @="%PROGRAM FILES%\Media Access\"

– [HKCR\Interface\{00ADA225-EA6C-4FB3-82E8-68189201CCB9}]
   • @="IInstaller"

– [HKCR\Interface\{00ADA225-EA6C-4FB3-82E8-68189201CCB9}\
   ProxyStubClsid]
   • @="{00020424-0000-0000-C000-000000000046}"

– [HKCR\Interface\{00ADA225-EA6C-4FB3-82E8-68189201CCB9}\
   ProxyStubClsid32]
   • @="{00020424-0000-0000-C000-000000000046}"

– [HKCR\Interface\{00ADA225-EA6C-4FB3-82E8-68189201CCB9}\TypeLib]
   • @="{15696AE2-6EA4-47F4-BEA6-A3D32693EFC7}"
   • "Version"="1.0"

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\
   Media Access]
   • "UninstallString"="%PROGRAM FILES%\Media Access\MediaAccess.exe /Remove"
   • "DisplayName"="Media Access"

 Backdoor Contact server:
The following:
   • http://www.windupdates.com/**********

As a result it may send some information.

 Miscellaneous Mutex:
It creates the following Mutex:
   • MediaAccess

 File details Programming language:
 The malware program was written in MS Visual C++.


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 Adriana Popa on Tuesday, December 19, 2006
Description updated by Adriana Popa on Tuesday, December 19, 2006

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