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Ransom.Linux.MULIAKA.AA

May 14, 2024
 Analysis by: Raighen Sanchez
 ALIASES:

UDS:Trojan-Ransom.Linux.Agent.a (KASPERSKY)

 PLATFORM:

Linux

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted: No

  • 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 drops files as ransom note.

  TECHNICAL DETAILS

File Size:

5,938,440 bytes

File Type:

ELF

Memory Resident:

No

Initial Samples Received Date:

11 Apr 2024

Payload:

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.

Other Details

This Ransomware does the following:

  • It only encrypts files in the directory where it is executed.

Ransomware Routine

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

  • {original filename}.{original extension}.sdff

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

  • {executed directory}\readme.txt

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

19.286.03

FIRST VSAPI PATTERN DATE:

18 Apr 2024

VSAPI OPR PATTERN File:

19.287.00

VSAPI OPR PATTERN Date:

19 Apr 2024

Step 1

Search and delete these files

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There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  •  {executed directory}\readme.txt

Step 2

Scan your computer with your Trend Micro product to delete files detected as Ransom.Linux.MULIAKA.AA. 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:


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