Netwalker Ransomware
Netwalker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Mailto, Koko, NetWalker Doxware.
Quick facts
How Netwalker ransomware works
File encryption patterns
Netwalker modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Netwalker displays ransom notes demanding payment for file recovery:
notes/5E728-Readme.txt
Technical indicators
Associated executable files
The following executable files are associated with Netwalker ransomware:
- 212fe44ced.exe
- 2c08f5ca36.exe
- 364f57fd.exe
- f1cd57bf.exe
- 54101b5d.exe
- 22.exe
- 1c34c545.exe
- 99e00f24.exe
- e52eea98.exe
- ccddc65d.exe
- 96c196eb.exe
- wwllww.vexe
- 430f3cda.exe
- 722b6392.exe
- ef3ff3f0.exe
- 2001.exe
- myvtfile.exe
- CORONAVIRUS_COVID-19.vbs
- all.ps1
- Ransomware.ps1
- dante.ps1
- Ransomware (1).ps1
- ned2.ps1
- pay.ps1
- oopsNO.ps1
- skyfall_user wilsonk_wilsonk_ste.txt.ps1
- Based
- grips.exe
- rdp__bd__60__1905346__1607274786.exe
- rdp__bd__60__1905346__1607274786.bin
- ntwlk.ps1
- CORONAVIRUS_COVID-19.vbs (myvtfile.exe)
- Bedeva Hack.exe
About this analysis
This Netwalker 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 Netwalker.
Last updated: December 30, 2025
Elastio detects Netwalker inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Netwalker 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.
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