Ransomware Research

PayDay HT Ransomware

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

Quick facts

Ransomware Family
PayDay HT
First Seen
December 1, 2016

How PayDay HT ransomware works

File encryption patterns

PayDay HT modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.sexy

Ransom note and payment demands

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

file!!!!!ATENÇÃO!!!!!.html
notes/!!!!!ATENÇÃO!!!!!.html
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with PayDay HT ransomware:

About this analysis

This PayDay HT 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 PayDay HT.

Last updated: December 30, 2025

Detection coverage

Elastio detects PayDay HT inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify PayDay HT 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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