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ELF_MIRAI.LBOUG

July 23, 2018
 Analysis by: Noel Anthony Llimos
 ALIASES:

Linux/Mirai.acgfb (Avira)

 PLATFORM:

Linux

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet


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

It executes then deletes itself afterward.

It connects to a website to send and receive information.

  TECHNICAL DETAILS

File Size:

52,280 bytes

File Type:

ELF

Memory Resident:

Yes

Initial Samples Received Date:

16 Jul 2018

Payload:

Compromises system security, Connects to URLs/IPs

Arrival Details

This Worm may be downloaded by the following malware/grayware from remote sites:

Installation

This Worm drops a copy of itself in the following folders using different file names:

  • /boot/
  • /data/local/tmp/
  • /dev/
  • /dev/netslink/
  • /dev/shm/
  • /home
  • /mnt/
  • /sdcard/Download/
  • /tmp/
  • /usr/
  • /var/
  • /var/run/
  • /var/tmp/

It executes then deletes itself afterward.

Backdoor Routine

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

  • {BLOCKED}.{BLOCKED}.62.169:7267

Other Details

This Worm does the following:

  • Perform DDOS Attacks
  • Download Files
  • Execute Shell Commands
  • Search for connected android devices with enabled 5555 Android Debug Bridge Ports.
  • Resolve its C&C server by sending a query to a DNS Server using the hostname “n.{BLOCKED}ianhorseriding.com”.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.388.05

FIRST VSAPI PATTERN DATE:

18 Jul 2018

VSAPI OPR PATTERN File:

14.389.00

VSAPI OPR PATTERN Date:

19 Jul 2018

Scan your computer with your Trend Micro product to delete files detected as ELF_MIRAI.LBOUG. 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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