Ransomware Research

PewPew Ransomware

PewPew is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Abkir, Artemis, Optimus.

Quick facts

Ransomware Family
PewPew
First Seen
September 1, 2020
Known Aliases
AbkirArtemisOptimus

How PewPew ransomware works

File encryption patterns

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

Extensions added after encryption
.abkir.artemis.optimus.lama

Ransom note and payment demands

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

fileinfo-decrypt.hta
notes/info-decrypt.hta
Location: EveryFolder
fileDecrypt-info.txt
notes/Decrypt-info.txt
Location: EveryFolder
file/^ReadMe-\[[A-Z0-9]{8}\]\.txt$/
notes/ReadMe-[C63F241F].txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with PewPew ransomware:

About this analysis

This PewPew 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 PewPew.

Last updated: December 30, 2025

Detection coverage

Elastio detects PewPew inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify PewPew 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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