Analysis by: Karen Ivy Titiwa
 PLATFORM:

Linux

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

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: 609 bytes
File Type: ELF
Memory Resident: Yes
Initial Samples Received Date: 22 Mar 2020
Payload: Connects to URLs/IPs, Downloads 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.

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • http://{BLOCKED}.{BLOCKED}.196.75/bins/x86.bot
  • http://{BLOCKED}.{BLOCKED}.196.75/bins/arm.bot
  • http://{BLOCKED}.{BLOCKED}.196.75/bins/arm5.bot
  • http://{BLOCKED}.{BLOCKED}.196.75/bins/arm6.bot
  • http://{BLOCKED}.{BLOCKED}.196.75/bins/arm7.bot
  • http://{BLOCKED}.{BLOCKED}.196.75/bins/mips.bot
  • http://{BLOCKED}.{BLOCKED}.196.75/bins/mpsl.bot

It saves the files it downloads using the following names:

  • owo

Other Details

This Trojan executes the downloaded file using the following commands:

  • ./owo exploit.zyxel.x86
  • ./owo exploit.zyxel.arm
  • ./owo exploit.zyxel.arm5
  • ./owo exploit.zyxel.arm6
  • ./owo exploit.zyxel.arm7
  • ./owo exploit.zyxel.mips
  • ./owo exploit.zyxel.mpsl

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.762.04
FIRST VSAPI PATTERN DATE: 24 Mar 2020
VSAPI OPR PATTERN File: 15.763.00
VSAPI OPR PATTERN Date: 25 Mar 2020

Scan your computer with your Trend Micro product to delete files detected as Trojan.SH.MIRAI.BOE. 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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