Explorer.EXE Trying to Install a Trojan

This section describes how Windows Explorer, Explorer.EXE, and FireFox firefox.exe was trying to install malicious .sys and .exe files on the system.

Half hour later, additional Trojan activities were reported by McAfee VirusScan See OnAccessScanLog.txt log file records below:

<date> 10:09:52 PM Cleaned hyang C:\WINDOWS\Explorer.EXE 
   c:\windows\system32\drivers\yzpqaxboqp.sys PWS-Mmorpg.gen (Trojan)

<date> 10:09:52 PM Deleted hyang C:\WINDOWS\Explorer.EXE 
   C:\WINDOWS\SYSTEM32\DRIVERS\YZPQAXBOQP.SYS PWS-Mmorpg.gen (Trojan)

<date> 10:09:52 PM Deleted hyang C:\WINDOWS\Explorer.EXE 
   C:\WINDOWS\system32\drivers\yzpqaxboqp.sys PWS-Mmorpg.gen (Trojan)

<date> 10:32:15 PM Cleaned hyang C:\Program Files\Mozilla Firefox
   \firefox.exe c:\windows\temp\my.exe PWS-Mmorpg.gen (Trojan)

<date> 10:32:15 PM Deleted hyang C:\Program Files\Mozilla Firefox
   \firefox.exe C:\WINDOWS\TEMP\MY.EXE PWS-Mmorpg.gen (Trojan)

<date> 10:32:15 PM Deleted hyang C:\Program Files\Mozilla Firefox
   \firefox.exe C:\WINDOWS\Temp\my.exe PWS-Mmorpg.gen (Trojan)

<date> 11:15:48 PM Cleaned hyang C:\Program Files\Mozilla Firefox
   \firefox.exe c:\windows\temp\my.exe PWS-Mmorpg.gen (Trojan)

<date> 11:15:48 PM Deleted hyang C:\Program Files\Mozilla Firefox
   \firefox.exe C:\WINDOWS\TEMP\MY.EXE PWS-Mmorpg.gen (Trojan)

<date> 11:15:48 PM Deleted hyang C:\Program Files\Mozilla Firefox
   \firefox.exe C:\WINDOWS\Temp\my.exe PWS-Mmorpg.gen (Trojan)

I was confused with these log records:

Last update: 2006.

Table of Contents

 About This Windows Security Book

 Windows 8: System Security Review

 Windows 8: System Security Protection

 Windows 8 System Recovery

 Windows 8 Defender for Real-Time Protection

 Windows 7: System Security Review

 Windows 7: System Security Protection

 Windows 7 System Recovery

 Windows 7 Forefront Client Security

 Norton Power Eraser - Anti-Virus Scan Tool

 McAfee Virus and Malware Protection Tools

 Spybot - Spyware Blocker, Detection and Removal

 Keeping Firefox Secure

 Keeping IE (Internet Explorer) Secure

 Malware (Adware, Spyware, Trojan, Worm, and Virus)

 HijackThis - Browser Hijacker Diagnosis Tool

 IE Add-on Program Listing and Removal

 "Conduit Search" - Malware Detection and Removal

 "Tube Dimmer", "Scorpion Saver" or "Adpeak" Malware

 Malware Manual Removal Experience

 Vundo (VirtuMonde/VirtuMundo) - vtsts.dll Removal

 Trojan and Malware "Puper" Description and Removal

 VSToolbar (VSAdd-in.dll) - Description and Removal

PWS (Password Stealer) Trojan Infection Removal

 What Is PWS (Password Stealer) Trojan?

 JS/Downloader.gen - JavaScript Downloader Malware

 PWS-Mmorpg.gen - A Password Stealer Trojan

 heb.exe - The Trojan Installer Program

 .exe and .dll Files Installed by the Trojan

 my.exe - A Second PWS Trojan Infection

 .exe and .dll Files of the Second Trojan

Explorer.EXE Trying to Install a Trojan

 AccessProtectionLog.txt Log File Records

 ATF-Cleaner.exe - Temporary File Remover

 Trajon Files Left in the System Folder

 Removing PWS Trojan Files

 Removing PWS Trojan Startup Entries

 Command Processor AutoRun - Registry Value

 UserInit - Winlogon Registry Key

 js.users.51.la - hosts File Entries

 Image File Execution Options - Registry Key

 regedit.exe Not Working

 MS08-001 Vulnerability on Windows Systems

 Antivirus System PRO

 References

 PDF Printing Version