Analysis by: Jemimah Mae Molina
 PLATFORM:

Linux

 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, Dropped by other malware

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

  TECHNICAL DETAILS

File Size: 103,468 bytes
File Type: ELF
Memory Resident: Yes
Initial Samples Received Date: 20 Mar 2019
Payload: Connects to URLs/IPs, Executes files

Arrival Details

This Trojan 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 Trojan drops the following files:

  • /etc/rzx - contains the new file name of its miner

Other Details

This Trojan does the following:

  • It checks if httpdz exists in /etc/ or /tmp/
  • It checks if initdz exists in /etc/ or /tmp/
    • It downloads initdz from http://{BLOCKED}.{BLOCKED}i.xyz:43768/initdz
    • Then executes the downloaded file - detected as Trojan.Linux.MALXMR.UWEJC

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 14.886.01
FIRST VSAPI PATTERN DATE: 20 Mar 2019
VSAPI OPR PATTERN File: 14.887.00
VSAPI OPR PATTERN Date: 21 Mar 2019

Scan your computer with your Trend Micro product to delete files detected as Trojan.Linux.WATCHMINE.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:


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