Ransomware Research

PClock Ransomware

PClock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2016, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: PClock2.

Quick Facts

Ransomware Family
PClock
First Seen
May 1, 2016
Known Aliases
PClock2

How PClock Ransomware Works

Targeted Files

NOSAMPLE

Ransom Note and Payment Demands

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

message

Ransom message:

notes/note.txt

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About This Analysis

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

Last updated: July 30, 2025

PClock Ransomware - Detectable by Elastio