Solved! Use SYSTEM3_.EXE (Worm Autoit) Removal Guide

I will tell you in this post how to fix the issue manually and how to clean it automatically using a special powerful removal tool. You can download the removal program for free here:

Manual removal instructions:

SYSTEM3_.EXE – Worm Autoit removal

File MD5 Virus Alias
SYSTEM3_.EXE 0204c1c5c9d2e1affb15d4bdf26330e0 Worm Autoit
SYSTEM3_.EXE 0204c1c5c9d2e1affb15d4bdf26330e0 Trojan Generic
SYSTEM3_.EXE 0204c1c5c9d2e1affb15d4bdf26330e0 Trojan Downloader
SYSTEM3_.EXE 0204c1c5c9d2e1affb15d4bdf26330e0 Worm Vobfus
SYSTEM3_.EXE 0204c1c5c9d2e1affb15d4bdf26330e0 Worm Autorun
SYSTEM3_.EXE 0204c1c5c9d2e1affb15d4bdf26330e0 Trojan Agent

SYSTEM3_.EXE size: 855040 bytes
SYSTEM3_.EXE hash: 0204C1C5C9D2E1AFFB15D4BDF26330E0

Created files:

%SysDir%\system3_.exe
%WinDir%\system3_.exe

Autostart registry keys:

HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell: Explorer.exe System3_.exe
HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Yahoo Messengger: %WinDir%\System32\System3_.exe

Detected by UnHackMe:

SYSTEM3_.EXE
Default location: %WinDir%\SYSTEM3_.EXE

Dropper information:
MD5: 0204c1c5c9d2e1affb15d4bdf26330e0
File size: 855040 bytes