Analysis by: Janus Agcaoili
 Modified by: David John Agni
ALIASES:

OSX/Filecoder.C (ESET-NOD32), OSX.Ransomcrypt (Symantec), Trojan.MAC.OSX.Mabouia.A (F-Secure)

 PLATFORM:

Mac OSX

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

This Trojan may be downloaded by other malware/grayware/spyware from remote sites.

It connects to a website to send and receive information.

It gathers information and reports it to its servers.

  TECHNICAL DETAILS

File Size: 125472 bytes
File Type: Mach-O
Memory Resident: Yes
Initial Samples Received Date: 13 Nov 2015
Payload: Connects to URLs/IPs, Encrypts files, Steals information

Arrival Details

This Trojan may be downloaded by other malware/grayware/spyware from remote sites.

Installation

This Trojan drops the following files:

  • $HOME/Desktop/mabouia_Decrypter
  • $HOME/Desktop/READ-ME.txt - ransom note

Backdoor Routine

This Trojan connects to the following websites to send and receive information:

  • http://{BLOCKED}vecode.com.br/mabouia/catcher.php

Other Details

This Trojan gathers the following information and reports it to its servers:

  • Generated Key
  • Victim ID

NOTES:

It encrypts the following directory:

  • $HOME/Desktop/ransom

Contents of READ-ME.txt

  SOLUTION

Minimum Scan Engine: 9.800

Scan your computer with your Trend Micro product to delete files detected as RANSOM_MABAIOU.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 this Knowledge Base page for more information.


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