Analysis by: Neljorn Nathaniel Aguas
ALIASES:

TR/Agent.rxlow (ANTIVIR)

 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

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.

  TECHNICAL DETAILS

File Size: 99 bytes
File Type: BAT
Memory Resident: No
Initial Samples Received Date: 29 Feb 2024

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 requires the following main component to successfully perform its intended routine:
    Ransom.Win32.LOCKBIT.YADLVT
  • It contains the following commands to execute its main component:
    • @echo off
      rundll32 %~dp0\LB3_Rundll32_pass.dll,gdll -pass 43{BLOCKED}5b32eca8e301b
      DEL %0
  • It deletes itself after the main component finishes the encryption routine.

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 19.192.05
FIRST VSAPI PATTERN DATE: 02 Mar 2024
VSAPI OPR PATTERN File: 19.193.00
VSAPI OPR PATTERN Date: 03 Mar 2024

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.BAT.LOCKBIT.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:


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