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Software-Defender.net

Posted: April 21, 2010

Software-Defender.net (or Software-defender.com) is an insecure domain supporting Antispyware Soft. The corrupt site appears to be a system scan but produces bogus results to scare users into thinking the PC is infected. This is blatant attempt at trying to sell Antispyware Soft, which will allegedly remove these so-called threats from the system. Do not fall for this trickery and remove software-defender.net or software-defender.com from the compromised system immediately.

File System Modifications

  • The following files were created in the system:
    # File Name
    1 %UserProfile%\Local Settings\Application Data\{random}tssd.exe

Registry Modifications

  • The following newly produced Registry Values are:
    HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download "CheckExeSignatures" = "no"HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download "RunInvalidSignatures" = "1"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings "ProxyEnable" = "1"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings "ProxyOverride" = "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings "ProxyServer" = "http=127.0.0.1:5555"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Associations "LowRiskFileTypes" = ".exe"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Attachments "SaveZoneInformation" = "1"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "{random}"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\..{RunKeys}HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "{random}"
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