Analysis by: Wilbert Vidal
ALIASES:

Ransom.FileCryptor (Malwarebytes); RDN/Ransom (McAfee)

 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: Dropped by other malware, 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 is capable of encrypting files in the affected system.

It encrypts files with specific file extensions. It encrypts files found in specific folders.

  TECHNICAL DETAILS

File Size: 13,312 bytes
Memory Resident: No
Initial Samples Received Date: 12 Jun 2017
Payload: 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 is capable of encrypting files in the affected system.

It locks the screen and displays the following image:

Ransomware Routine

This Ransomware encrypts files with the following extensions:

  • .htlm
  • .db
  • .exe
  • .txt

It encrypts files found in the following folders:

  • %User Profile%\My Pictures
  • %User Profile%\Desktop
  • %User Profile%\Application Data
  • %User Profile%\My Music
  • %User Profile%\My Documents

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

NOTES:
The password required is 'xdlsd420' to unlock the screen.

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 13.466.07
FIRST VSAPI PATTERN DATE: 12 Jun 2017
VSAPI OPR PATTERN File: 13.467.00
VSAPI OPR PATTERN Date: 13 Jun 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_XYZWARE.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.


Did this description help? Tell us how we did.