Analysis by: Patrick Noel Collado
ALIASES:

DDoS:Linux/Gafgyt.YA!MTB (Microsoft), HEUR:Backdoor.Linux.Mirai.ba(Kaspersky)

 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: Dropped by other malware, Downloaded from the Internet, Propagates via software vulnerabilities

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.

It exploits software vulnerabilities to propagate to other computers across a network.

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

  TECHNICAL DETAILS

File Size: 54,032 bytes
File Type: ELF
Memory Resident: No
Initial Samples Received Date: 04 Feb 2020
Payload: Launches DoS/DDoS attacks, Connects to URLs/IPs, Others

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.

Propagation

This Trojan exploits the following software vulnerabilities to propagate to other computers across a network:

Backdoor Routine

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

  • Performs various DDOS attacks

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

  • {BLOCKED}.{BLOCKED}.180.20

Other Details

This Trojan does the following:

  • It uses the following credentials to try to login to other devices
    • xc3511
    • root
    • xc3518
    • xc3515
    • 20150602
    • vstarcam2015
    • zte9x15
    • vizxv
    • vertex25ektks123
    • Zte521
    • default
    • OxhlwSG8
    • S2fGqNFs
    • lJwpbo6
    • antslq
    • guest
    • aquario
    • support
    • password
    • user
    • admin123
    • 1111
    • 12345
    • ipcam_rt5350
    • ho4uku6at
    • kont2004
    • Win1doW$
    • hunt5759
    • COadmin123
    • ZmqVfoSIP
    • 3ep5w2u

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.710.05
FIRST VSAPI PATTERN DATE: 27 Feb 2020
VSAPI OPR PATTERN File: 15.711.00
VSAPI OPR PATTERN Date: 28 Feb 2020

Scan your computer with your Trend Micro product to delete files detected as IoT.Linux.MIRAI.DLEW. 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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