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Ritdoor.b

Posted: March 28, 2006

Ritdoor.b is an Internet worm that spreads by exploiting vulnerable PCs running Microsoft Windows operating computer with unpatched security flaws. The spyware is designed to open a back door on a compromised PC. It gives the attacker unauthorized remote access to the computer. The intruder can download and run arbitrary files, install additional software. The worm may disable Windows Firewall, certain computer services and tools. Ritdoor.b automatically runs on every Windows startup.

File System Modifications

  • The following files were created in the system:
    # File Name
    1 msdeff.exe
    2 mstempf.exe
    3 winlogon.exe

Registry Modifications

  • The following newly produced Registry Values are:
    HKEY..\..\..\..{RegistryKeys}HKEY_CURRENT_USERSoftwareMicrosoftInternetExploreriepfsgdc=1HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionPoliciesDisableRegistryTools=0HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionRunHKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionPoliciesDisableRegistryTools=0HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesSharedAccessStart=4pcserv32g
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