Analysis by: Neljorn Nathaniel Aguas
 PLATFORM:

Linux

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Canal de infección Downloaded from the Internet, Dropped by other malware

This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It avoids encrypting files with the following file extensions.

  TECHNICAL DETAILS

Tamaño del archivo 2,378,096 bytes
Tipo de archivo ELF
Residente en memoria No
Fecha de recepción de las muestras iniciales 03 Jul 2024
Carga útil Encrypts files

Arrival Details

This Ransomware 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 Ransomware does the following:

  • It won't proceed to encryption unless the parameter -p | --path is specified.

It accepts the following parameters:

  • -h | --help → show help message
  • -p | --path {Path} → encrypt files in the specified path
  • -m | --mode local → encrypt mode - only local (default)
  • -l | --log {Filename} → log file path
  • -v | --verbose → enable verbose mode
  • --exclude-vms {Filename} → filename path with VMS names for excluding encrypting
  • --esxi-vm-killer-off → disable ESXi VMS killer
  • --no-mutex → start program without checking global sync object

Ransomware Routine

This Ransomware appends the following extension to the file name of the encrypted files:

  • .NBA

It avoids encrypting files with the following file extensions:

  • .NBA
  • .NBA{Any String}

  SOLUTION

Motor de exploración mínimo 9.800
Primer archivo de patrones de VSAPI 19.444.05
Primera fecha de publicación de patrones de VSAPI 03 Jul 2024
Versión de patrones OPR de VSAPI 19.445.00
Fecha de publicación de patrones OPR de VSAPI 04 Jul 2024

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.XXELFC1DFF045

Step 2

Scan your computer with your Trend Micro product to delete files detected as Ransom.Linux.EBANUL.THGOCBD. 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:

Step 3

Restore encrypted files from backup.


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