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Ransom.Linux.WARLOCK.A

July 29, 2025
 Analysis by: John Rainier Navato
 ALIASES:

Trojan-Ransom.Babyk (IKARUS)

 PLATFORM:

Linux

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine.

It drops files as ransom note.

  TECHNICAL DETAILS

File Size:

77,832 bytes

File Type:

ELF

Initial Samples Received Date:

28 Jul 2025

Payload:

Drops files, Encrypts files

Arrival Details

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Ransomware drops the following files:

  • {Encrypted File Path}/How to decrypt my data.readme

Other Details

This Ransomware requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine.

Ransomware Routine

This Ransomware appends the following extension to the file name of the encrypted files:

  • {Original Filename}.{Original File Extension}.x2anylock

It drops the following file(s) as ransom note:

  • {Encrypted File Path}/How to decrypt my data.readme

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

20.358.05

FIRST VSAPI PATTERN DATE:

28 Jul 2025

VSAPI OPR PATTERN File:

20.359.00

VSAPI OPR PATTERN Date:

29 Jul 2025

Step 1

Scan your computer with your Trend Micro product to delete files detected as Ransom.Linux.WARLOCK.A. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:

Step 2

Restore encrypted files from backup.


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