Ransomware Research

WowSmithAgain Ransomware

WowSmithAgain is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2022, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Petna Nextgen.

Quick facts

Ransomware Family
WowSmithAgain
First Seen
February 1, 2022
Known Aliases
Petna Nextgen

How WowSmithAgain ransomware works

File encryption patterns

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

Extensions added after encryption
.ramsome.encrypt(rsw).nat

Ransom note and payment demands

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

filereadme-instructions.txt
notes/readme-instructions.txt
file/^README_[0-9]{7}\.txt$/
notes/README_0184997.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with WowSmithAgain ransomware:

About this analysis

This WowSmithAgain 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 WowSmithAgain.

Last updated: December 30, 2025

Detection coverage

Elastio detects WowSmithAgain inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify WowSmithAgain 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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