fileREADME-GENTLEMEN.txtREADME-GENTLEMEN_2.txt
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Ransomware Research
Gentlemen Ransomware
Gentlemen is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2025, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: ArmCorp, Hastalamuerte.
Quick facts
- Ransomware Family
- Gentlemen
- First Seen
- July 1, 2025
- Known Aliases
- ArmCorp
- Hastalamuerte
How Gentlemen ransomware works
File modification behavior
Gentlemen updates file modification timestamps after encryption.
File encryption patterns
Gentlemen modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .\.[A-Za-z0-9]{6}$
Ransom note and payment demands
After encrypting files, Gentlemen displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with Gentlemen ransomware:
- VCENTER.ps1
- Keylogger2.go
- Keylogger.go
- deploy.cmd
- ThrottleBlood.sys
- viragt64.sys
- dona.exe
- meei1bx.exe
About this analysis
This Gentlemen 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 Gentlemen.
Detection coverage
Elastio detects Gentlemen inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Gentlemen across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.