PC Defender Adware Removal Instructions

[Christian Mairoll 231]

The Emsi Software malware research team has discoverd a new outbreak of the PC Defender adware. a-squared Anti-Malware detects this malware as Adware.Win32.PCDefender.

PC Defender is a rogue security program. This rogue application tries to trick you by displaying false positive/misleading scan results report, which says that your computer is infected with viruses or trojan, but you will not be able to delete them before you purchase.

This program has a funny thing. It will displays fake blue screen on the victim machine. The blue screen will look like this:

Create new files:

• %ProgramFiles%Def GroupPC DefenderAntispyware.exe
• %ProgramFiles%Def GroupPC Defenderhook.dll
• %ProgramFiles%Def GroupPC Defenderproccheck.exe
• %AllUsersProfile%DesktopPC Defender.lnk
• %AllUsersProfile%Start MenuProgramsPC DefenderPC Defender.lnk

Create new registry entries:

• HKEY_CURRENT_USERsoftwareDef Group
• HKEY_CURRENT_USERsoftwareDef GroupAntispyware
• HKEY_CURRENT_USERsoftwareDef GroupAntispywareFound

Modify registry entry:

• HKEY_LOCAL_MACHINEsoftwaremicrosoftwindows ntcurrentversionwinlogon
  Old: Userinit = C:WINDOWSsystem32userinit.exe,
  New: Userinit = C:WINDOWSsystem32userinit.exe,”C:Program FilesDef GroupPC DefenderAntispyware.exe”

Screenshots:

How to remove the infection of PC Defender (Adware.Win32.PCDefender)?

To delete this malware infection, please download and install a-squared Anti-Malware. Run a full scan on all drives and move all detected items to the quarantine.

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