Analysis by: Jayvee Mark Villaroman

 ALIASES:

Backdoor:Linux/GetShell.B!xp (MICROSOFT)

 PLATFORM:

Windows

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

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.

However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

Tipo de compactação: 152 bytes
Tipo de arquivo: ELF
Residente na memória: No
Data de recebimento das amostras iniciais: 25 Apr 2023

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.

Other Details

This Backdoor connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.15.101:8512

It does the following:

  • It attempts to establish a connection to {BLOCKED}.{BLOCKED}.15.101 for command and control.

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Mecanismo de varredura mínima: 9.800
Primeiro arquivo padrão VSAPI: 13.302.05
Data do lançamento do primeiro padrão VSAPI: 27 Mar 2017
VSAPI OPR Pattern Version: 13.303.00
VSAPI OPR Pattern veröffentlicht am: 28 Mar 2017

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     Troj.ELF.TRX.XXELFC1DFF027

Step 2

Scan your computer with your Trend Micro product to delete files detected as ELF_GETSHELL.SMA. 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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