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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

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