- Threat Encyclopedia
- Malware
- Ransom.Win64.RYUK.SM
Ransom:Win64/Ryuk.PA!MTB(Microsoft); Trojan-Ransom.Win32.Encoder.cpj(Kaspersky)
Windows
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 drops files as ransom note.
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.
Installation
This Ransomware drops the following files:
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
Process Termination
This Ransomware terminates the following processes if found running in the affected system's memory:
Other Details
This Ransomware does the following:
Ransomware Routine
This Ransomware appends the following extension to the file name of the encrypted files:
It drops the following file(s) as ransom note:
Step 1
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 2
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 3
Restart in Safe Mode
Step 4
Search and delete these files
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win64.RYUK.SM. 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 6
Restore encrypted files from backup.