Ransomware Research

PopCornTime Ransomware

PopCornTime is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2016, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
PopCornTime
First Seen
November 1, 2016

How PopCornTime ransomware works

File encryption patterns

PopCornTime modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.kok.filock

Ransom note and payment demands

After encrypting files, PopCornTime displays ransom notes demanding payment for file recovery:

filerestore_your_files.txt
notes/restore_your_files.txt
Location: Desktop
filerestore_your_files.html
notes/restore_your_files.html
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with PopCornTime ransomware:

About this analysis

This PopCornTime ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like PopCornTime.

Last updated: December 30, 2025

Detection coverage

Elastio detects PopCornTime inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify PopCornTime across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.

See How the Hunt Engine WorksRequest a Demo

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