Analysis by: Joshua Paul Ignacio
ALIASES:

HEUR:Backdoor.Linux.Mirai.b (KASPERSKY); Trojan:Linux/Mirai.AH!MTB (MICROSOFT)

 PLATFORM:

Linux

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

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

It executes commands from a remote malicious user, effectively compromising the affected system.

  TECHNICAL DETAILS

File Size: 132,860 bytes
File Type: ELF
Memory Resident: Yes
Initial Samples Received Date: 13 Sep 2020
Payload: Launches DoS/DDoS attacks, Others, Terminates processes, Connects to URLs/IPs

Arrival Details

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

Backdoor Routine

This Backdoor executes the following commands from a remote malicious user:

  • Perform various DDoS attack
  • Collecting Bot Information
  • Execute the payload of the specified URL
  • Update the sample from the specified URL
  • Execute system or custom commands

Denial of Service (DoS) Attack

This Backdoor is capable of performing various network denial-of-service (DoS) attacks:

    Process Termination

    This Backdoor terminates the following processes if found running in the affected system's memory:

    • telnetd
    • utelnetd
    • scfgmgr

    Other Details

    This Backdoor does the following:

      SOLUTION

    Minimum Scan Engine: 9.850
    FIRST VSAPI PATTERN FILE: 16.232.06
    FIRST VSAPI PATTERN DATE: 17 Sep 2020
    VSAPI OPR PATTERN File: 16.233.00
    VSAPI OPR PATTERN Date: 18 Sep 2020

    Scan your computer with your Trend Micro product to delete files detected as Backdoor.Linux.MOZI.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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