arrow_back
search
close

RANSOM_CRYPAYSAVE.A

October 18, 2017
 ALIASES:

Trojan.Ransom.FileCryptor (ALYac); Win32.Trojan-Ransom.Filecoder.P@gen (GData)

 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 connects to a website to send and receive information.

It is capable of encrypting files in the affected system.

It drops files as ransom note.

  TECHNICAL DETAILS

File Size:

14,848 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

13 Jun 2017

Payload:

Connects to URLs/IPs, 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.

Backdoor Routine

This Ransomware connects to the following websites to send and receive information:

  • http://duetro-proxy.{BLOCKED}ity.de

Other Details

This Ransomware is capable of encrypting files in the affected system.

Ransomware Routine

This Ransomware avoids encrypting files with the following strings in their file name:

  • .exe
  • @decrypt_your_files.txt

It appends the following extension to the file name of the encrypted files:

  • .rnsmwre

It drops the following file(s) as ransom note:

  • {Path It Encrypts}\@decrypt_your_files.txt

It leaves text files that serve as ransom notes containing the following text:

  • "Your files are encrypted!", "", "There is only one way to get them back:", "You need to send me a 20 USD PaySaveCard-Code [Write it into the Console Window!]"

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.468.07

FIRST VSAPI PATTERN DATE:

13 Jun 2017

VSAPI OPR PATTERN File:

13.469.00

VSAPI OPR PATTERN Date:

14 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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  {Path It Encrypts}\@decrypt_your_files.txt

Step 4

Scan your computer with your Trend Micro product to delete files detected as RANSOM_CRYPAYSAVE.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.

Step 5

Restore encrypted files from backup.


Did this description help? Tell us how we did.