Analysis by: Joselyn Canuela
ALIASES:

Ransom.LaserLocker (Malwarebytes), MSIL.Trojan-Ransom.Winlock.Y (GData), Worm.MSIL.Autorun (Ikarus)

 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

Infection Channel: 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 may be manually installed by a user.

  TECHNICAL DETAILS

File Size: 443,906 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 23 Jul 2016
Payload: Locks screen

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.

It may be manually installed by a user.

Other Details

This Ransomware does the following:

  • It is a ransomware builder that locks the computer screen.
  • The builder is capable of creating a password and a survey URL.
  • Additional instructions can be added.
  • It is capable of doing the following:
    • Enable Startup
    • Disable Task Manager
    • Disable CMD
    • Disable System Restore
  • Clicking the "Build" button will create the actual ransomware file.

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 13.688.04
FIRST VSAPI PATTERN DATE: 29 Sep 2017
VSAPI OPR PATTERN File: 13.689.00
VSAPI OPR PATTERN Date: 30 Sep 2017

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 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_LASERLOCK.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 this Knowledge Base page for more information.


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