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Delete These Sims 4 Files Immediately if You Use Mod the Sims

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Screenshot from Sims After Dark’s Discord showing a bold warning: “DO NOT DOWNLOAD ANY MODS HOSTED ON MODTHESIMS (MTS),” stating multiple accounts were compromised with tainted script files and advising users to delete downloads, run a virus scan, and change passwords.
Sims After Dark issued an urgent alert: avoid Mod The Sims (MTS) for now due to compromised accounts and tainted script uploads. Screenshot from the Sims After Dark Discord server.

Malicious ts4script Files Uploaded to Mod the Sims (March 1–2, 2026)

Beginning the morning of March 1, 2026, attackers compromised multiple Mod the Sims accounts. They uploaded malicious .ts4script files to several mods — including custom content that should not have contained script files at all.

Moderators posted additional updates:

  • March 1 (morning)

  • March 1 (afternoon)

  • March 2

All compromised files have now been removed. However, if you downloaded any .ts4script files from Mod the Sims starting March 1, you should act immediately.

These files were confirmed to contain clearly malicious content.

Screenshot of a Mod the Sims forum post titled “New login security measures” explaining added IP address checks to prevent unauthorized logins.

Official Mod the Sims announcement detailing new login security measures added March 2026 to prevent unauthorized account access.

Immediate Action Steps

  • Delete any .ts4script files downloaded from Mod the Sims on or after March 1, 2026

  • Run a full-system malware and antivirus scan

  • Change important passwords (EA, email, Discord, financial accounts)

  • Enable two-factor authentication where available

Screenshot of Trend Micro Antivirus+ running a Quick Scan at 0 percent while checking the computer for potential threats.

Running a full antivirus scan after deleting potentially compromised Sims 4 script mods.

18+ Mod Website Also Compromised

An 18+ mod-hosting website was also affected during this incident.

If you recently downloaded an 18+ mod and do not use TwistedMexi’s ModGuard, check your system immediately.

Look inside your Sims 4 installation folder for a file named: “out.exe”

(or “out” if file extensions are hidden)

Do not open or run this file.

If you find it:

  • Delete the file

  • Delete recently downloaded 18+ mods

  • Empty your Recycle Bin

  • Run a full virus and malware scan

  • Change your passwords

This malware may attempt to compromise sensitive system data. Even if your computer appears normal, do not assume you are safe without checking.

Windows File Explorer search results showing no items found for out.exe in The Sims 4 folder.

Search results showing no out.exe file detected in The Sims 4 installation folder after checking for malware.

Mod Updates Temporarily Paused

As of March 2, 2026:

  • All known compromised files have been removed

  • Mod update news for files hosted only on Mod the Sims is currently paused

  • Community servers are actively spreading awareness

If you regularly use script mods, now is the time to review your Mods folder carefully. Custom content such as CAS items or presets typically should not contain .ts4script files — that alone is a warning sign.

Screenshot of a Discord server channel showing a warning message about compromised Mod the Sims accounts and malicious ts4script files.

Discord alert warning players to delete recently downloaded ts4script files from Mod the Sims and run a system scan.

For additional protection, you can download TwistedMexi’s ModGuard from his official website or CurseForge. It adds an extra layer of safety against malicious script injections, even though its not perfect.

Stay cautious, double-check your downloads, and run your scans today. It’s better to be thorough than risk your accounts or personal data.

I’m a longtime gamer, content creator, and passionate Sims 4 storyteller with a particular love for the darker, stranger, and more imaginative sides of gaming. My Simming journey has always been about more than simply building beautiful homes or creating families—I love creating characters, developing their stories, and seeing where their lives take them. Whether I’m playing out a dramatic legacy, experimenting with supernatural themes, or simply letting my Sims’ lives descend into wonderfully chaotic situations, storytelling is at the heart of how I play. Outside of The Sims, I’m a huge fan of World of Warcraft, Conan Exiles, and other games that allow me to explore immersive worlds and create stories of my own. I’m especially drawn to gothic, occult, fantasy, and dark-fantasy themes, which often find their way into both my gameplay and creative work. When I’m not writing about The Sims, you can usually find me gaming, streaming, creating content, or dreaming up the next story for my Sims to get themselves into. I’m excited to share my love of the game with the TSR community and hopefully inspire other Simmers along the way!

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