RANSOM_CRYPNTK.A
Ransom.FileCryptor (Malwarebytes), Ransom:Win32/FileCryptor (Microsoft)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
This Trojan 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.
TECHNICAL DETAILS
31,232 bytes
Yes
17 Feb 2017
Encrypts files
Arrival Details
This Trojan 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 Trojan renames encrypted files using the following names:
- {Original filename and extension}.powned
It is capable of encrypting files in the affected system.
NOTES:
In order to run properly, it checks the existence of the following: C:\Utilisateurs\Administrateur\Documents
The ransomware encrypts files in the following locations:
It avoids encrypting the following file:
After encryption, it displays the following message box:
It uses the following decryption key:
SOLUTION
9.850
13.226.08
17 Feb 2017
13.227.00
18 Feb 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
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_CRYPNTK.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 4
Restore encrypted files from backup.
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