The phrase “Is Your PC Infected? Try I-Worm/Prolin Scanner” refers to specialized antivirus removal utilities created in late 2000 to combat the I-Worm/Prolin (also known as the Prolin, Creative, or Shockwave worm). This specific malware mass-mailed itself to users and heavily altered local media files. Because of its unique way of manipulating files rather than deleting them, security vendors released custom “scanners” and recovery tools to reverse its effects. What Was the I-Worm/Prolin?
Released in December 2000, I-Worm/Prolin was a notable Windows email worm. It primarily spread via Microsoft Outlook by sending an email with the subject line “A great Shockwave flash movie” and an attached executable named creative.exe.
When a user executed the attachment, the worm performed the following actions:
Mass Mailing: It forwarded a copy of itself to every contact in the victim’s Outlook address book.
File Relocation & Renaming: It searched the local hard drive for .JPG, .MP3, and .ZIP files. Instead of deleting them, it moved them directly to the root C: directory.
The Linux Extension: It appended the phrase “change atleast now to Linux” to the end of every relocated file name (e.g., photo.jpg became photo.jpg.change atleast now to Linux).
Author Notification: It sent a silent confirmation email back to the creator’s Yahoo email address with the message “Got yet another idiot”. The Role of the Prolin Scanner
Unlike destructive malware that wiped hard drives, the Prolin worm left a text file behind Mocking the user but noting that the process could be undone if they were “smart enough”.
Because the files were merely renamed and hoarded into the root drive, dedicated Prolin Scanners and cleaning scripts were distributed by cybersecurity firms. Rather than just deleting the virus executable, these specific scanners automated the tedious process of shifting thousands of hijacked pictures, compressed archives, and music files back to their original folders and restoring their correct names. How to Check for Modern Infections
Because the Prolin worm is a relic from over two decades ago, an “I-Worm/Prolin Scanner” is entirely obsolete today. If you suspect your modern PC has malware, you should use contemporary, built-in, or trusted third-party tools:
Windows Defender Offline Scan: Access this via Windows Security > Virus & threat protection > Scan options. Select Microsoft Defender Antivirus offline scan to restart your PC and find persistent malware before the operating system fully boots.
Malicious Software Removal Tool (MRT): Press Win + R, type mrt, and press Enter. This built-in Windows utility checks for specific, high-priority systemic threats.
Verify Active Processes: Open Task Manager (Ctrl + Shift + Esc) and check the Startup apps tab. Disable any unrecognized applications from launching automatically when your computer turns on.