Analysis by: Bren Matthew Ebriega
ALIASES:

Ransom:Win32/FileCryptor.PK!MTB (MICROSOFT); Malicious_Behavior.SB (FORTINET)

 PLATFORM:

Windows

 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

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 encrypts files with specific file extensions.

  TECHNICAL DETAILS

Tamaño del archivo 903,680 bytes
Tipo de archivo EXE
Residente en memoria No
Fecha de recepción de las muestras iniciales 07 Jan 2021
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 encrypts FIXED and REMOVABLE drives.

Ransomware Routine

This Ransomware encrypts files with the following extensions:

  • .txt
  • .RTF
  • .doc
  • .jpg
  • .rar
  • .zip

It renames encrypted files using the following names:

  • {Original Filename}.HaHaHaHaHaHaHaHa

  SOLUTION

Motor de exploración mínimo 9.800
Primer archivo de patrones de VSAPI 16.478.08
Primera fecha de publicación de patrones de VSAPI 15 Jan 2021
Versión de patrones OPR de VSAPI 16.479.00
Fecha de publicación de patrones OPR de VSAPI 16 Jan 2021

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.LAUGHCRYPT.A. 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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