Analysis by: Joshua Paul Ignacio

 ALIASES:

ELF/BruteForce.I!tr (FORTINET), Trojan:Linux/CoinMiner!rfn (MICROSOFT)

 PLATFORM:

Linux

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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.

  TECHNICAL DETAILS

Tipo de compactação: 1,893,644 bytes
Tipo de arquivo: ELF
Data de recebimento das amostras iniciais: 26 Jun 2020

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.

Other Details

This Trojan does the following:

  • Upon executing, it will display the following list of arguments:
    • Use: scan [OPTIONS] [[USER PASS]] FILE] [IPs/IPs Port FILE]
    • Options:
      • -t [NUMTHREADS]: Change the number of threads used. Default is 10
      • -m [MODE]: Change the way the scan works. Default is 1
      • -f [FINAL SCAN]: Does a final scan on found servers. Default is 2
      • Use -f 1 for A.B class /16. Default is 2 for A.B.C /24
      • -i [IP SCAN]: use -i 0 to scan ip class A.B. Default is 1
      • if you use -i 0 then use ./scan -p 22 -i 0 p 192.168 as agrument for ip file
      • -m 0 for non selective scanning
      • -P 0 leave default password unchanged. Changes password by default.
      • -s [TIMEOUT]: Change the timeout. Default is 6
      • -S [2ndTIMEOUT]: Change the 2nd timeout. Default is 6
      • -p [PORT]: Specify another port to connect to. 0 for multiport
      • -c [REMOTE-COMMAND]: Command to execute on connect. Use ; or && with commands
      • -h : Show this help
      • -H 1: For extra help

  SOLUTION

Mecanismo de varredura mínima: 9.850
Primeiro arquivo padrão VSAPI: 15.954.08
Data do lançamento do primeiro padrão VSAPI: 26 Jun 2020
VSAPI OPR Pattern Version: 15.955.00
VSAPI OPR Pattern veröffentlicht am: 27 Jun 2020

Scan your computer with your Trend Micro product to delete files detected as Trojan.Linux.SSHBRUTE.UWEJT. 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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