Ransomware Research

Pay2Decrypt Ransomware

Pay2Decrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: BatFilecoder, BleachGap, RenderGraphics, LeakGap, Humble, Onim.

Quick facts

Ransomware Family
Pay2Decrypt
First Seen
October 1, 2019
Known Aliases
BatFilecoderBleachGapRenderGraphicsLeakGapHumbleOnim

How Pay2Decrypt ransomware works

File encryption patterns

Pay2Decrypt modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.lck.aes.h$./\.PAY2DECRYPT\w+$/

Ransom note and payment demands

After encrypting files, Pay2Decrypt displays ransom notes demanding payment for file recovery:

file/^Pay2Decrypt[0-9]{1,3}\.txt$/
notes/Pay2Decrypt17.txt
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with Pay2Decrypt ransomware:

About this analysis

This Pay2Decrypt 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 Pay2Decrypt.

Last updated: December 30, 2025

Detection coverage

Elastio detects Pay2Decrypt inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Pay2Decrypt 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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