Backdoor.Linux.MIRAI.AU

April 05, 2019
 Analysis by: Jemimah Mae Molina
 ALIASES:

ELF:Mirai-ADP [Trj] (AVAST); ELF/Mirai.OX!tr (FORTINET)

 PLATFORM:

Linux

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet

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.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

58,192 bytes

File Type:

ELF

Memory Resident:

No

Initial Samples Received Date:

05 Apr 2019

Payload:

Terminates processes, Exploits vulnerability

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:

  • Downloads a file
  • Performs various DDOS attacks
  • Executes shell commands
  • Uses default or easy-to-guess usernames and passwords to login to other devices

It connects to the following URL(s) to send and receive commands from a remote malicious user:

  • love.{BLOCKED}na.live:50872
  • narco.{BLOCKED}na.live:50872

Other Details

This Backdoor does the following:

  • It uses the following credentials to try to login to other devices:
    • 3vlig
    • fliruser
    • tsgoingon
    • taZz@01
    • telnetadmin
    • juniper123
    • super
    • ZXDSL
    • bcpb+serial#
    • maintainer
    • taZz@23495859
    • 1q2w3e4r5
    • admintelecom
    • telecomadmin
    • solokey
    • swsbzkgn
    • colorkey
    • manage
    • wbox123
    • support
    • default
    • 123456
    • guest
    • 2011vsta
    • 888888
    • e8ehome
    • e8telnet
    • huigu309
    • Maxitaxi01
    • linux
    • support123
    • 1001chin
    • S2fGqNFs
    • wrgn39_dlob.hans_dir645_V1
    • Alphanetworks
    • wrgn28_dlob_dir412
    • oelinux1234
    • ttnet
    • wrgn39_dlob.hans_dir645
    • 1q2w3e
    • cam1029
    • nE7jA%5m
    • h@32LuyD
    • vizxv
    • daemon
    • tlJwpbo6
    • zlxx.
    • Zte521
    • ipcam_rt5350
    • xc3511
    • vertex25ektks123
    • aquario
    • Is@dmin
    • superadmin
    • hunt5759
    • hello
    • cat1029
    • Mroot
    • v2mprt
    • ivdev
    • kont2004
    • hg2x0
    • 2oiidxii22
    • bayandsl
    • 19761213
    • sp-admin
    • 54321
    • zhongxing
    • volition
    • jnior
    • adslroot
    • adminttd
    • synnet
    • debug
    • adtran
    • uid=0
    • digitel
    • adminHW
  • It displays the strings below once executed in the command line:
    • autisticNigga
  • It is capable of terminating processes which satisfies any of the following conditions:
    • uses any of the following ports:
      • 23
      • 8080
      • 81
      • 53413
    • memory of the process contains strings related to botnets
  • It may spread to other devices by taking advantage of the following vulnerabilities:

It deletes itself after execution.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.920.03

FIRST VSAPI PATTERN DATE:

05 Apr 2019

VSAPI OPR PATTERN File:

14.921.00

VSAPI OPR PATTERN Date:

06 Apr 2019

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