Modest-menu_v0.9.6_[kiddionsmodmenu.com]_.zip -

with Malwarebytes or another reputable antivirus if you have already opened the file.

If you are looking for safe and verified single-player mods, stick to well-known community repositories: GTA5-Mods.com Nexus Mods

The file is highly likely a malicious file or a scam, as the official Kiddion's Modest Menu has been discontinued and does not have an official website by that name. Safety Warnings and Key Context

: Files from unofficial sources often contain Trojans or other malware. Security software frequently flags these tools as "false positives" due to how they inject into game memory, but in this case, the flag is likely a genuine warning because the source is illegitimate.

UnknownCheats (Historically the only official place for Kiddion's releases) Recommendations contained in that ZIP file. Delete the file immediately to avoid accidental execution.