Threat Information for "BackDoor.Dosia"

Removal Top

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Summary Top
  • Name: BackDoor.Dosia
  • Aliases:
  • Date Discovered: 2007-02-22
  • Protection Added: 2007-02-22
Description Top 
-- Ease of Removal

1: Runs as a service
2: Uses running processes
3: Consistently named
4: Consistent file contents

-- Privacy Risks/Security Changes

1: Opens backdoors
2: Mimics legitimate file names

-- Damage/Intrusion/Annoyance

1: Modifies non-critical registry entries
2: Significantly slows down the computer
3: Creates new files
4: Autoruns at startup without an option to be disabled

-- Propagation/Saturation

1: Infects with other exploitation method
2: Infects from a link in an email
3: Infects from an email attachment
4: Installed by other infections
Technical Details Top
  • Added Directory/File:
    FilePath: %WINDIR%\hkr32.asm
  • Added Directory/File:
    FilePath: %SYSTEMDIR%\ntswrl32.dll
  • Added Directory/File:
    FilePath: %SYSTEMDIR%\ldapi32.exe
  • Added Directory/File:
    FilePath: %SYSTEMDIR%\vssms32.exe
  • Added Directory/File:
    FilePath: %SYSTEMDIR%\ntcvx32.dll
  • Added Registry Key:
    Key: HKLM\SYSTEM\CurrentControlSet\Services\oreans32
  • Added Registry Key:
    Key: HKLM\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
  • Added Registry Key:
    Key: HKLM\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_OREANS32
  • Added Registry Value:
    Key: HKLM\%CURRENTVERSIONREG%\Run Value: vssms32