RANSOM_HIDDENTEARASSISTANT.A
Ransom.HiddenTear!g1(Norton);
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 encrypts files with specific file extensions. It encrypts files found in specific folders.
TECHNICAL DETAILS
21,504 bytes
EXE
No
21 May 2017
Displays graphics/image, 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.
Installation
This Ransomware drops the following files:
- C:\Users\islam\Desktop\key.txt ← contains key
Other Details
This Ransomware does the following:
- Display the following window as ransom note:
Ransomware Routine
This Ransomware encrypts files with the following extensions:
- .txt
- .doc
- .docx
- .xls
- .xlsx
- .ppt
- .pptx
- .odt
- .jpg
- .png
- .csv
- .sql
- .mdb
- .sln
- .php
- .asp
- .aspx
- .html
- .xml
- .psd
It encrypts files found in the following folders:
- C:\Chicken
It appends the following extension to the file name of the encrypted files:
- .pwned
SOLUTION
9.850
13.422.04
22 May 2017
13.423.00
23 May 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
- C:\Users\islam\Desktop\key.txt
Step 4
Scan your computer with your Trend Micro product to delete files detected as RANSOM_HIDDENTEARASSISTANT.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.
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