Ransom_HiddenTearADONIO.A
Backdoor:MSIL/Noancooe.C (MICROSOFT); Ransom.HiddenTear (NORTON)
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 certain websites to send and receive information.
It encrypts files with specific file extensions. It encrypts files found in specific folders. It drops files as ransom note.
TECHNICAL DETAILS
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 file(s)/component(s):
- %User Temp%\Sony.exe
- %User Temp%\Sony Vegas Pro 15.0.exe
- %User Temp%\1.exe - Encryptor file
- %User Temp%\2.exe - Decrptor window
- %Program Files%\PCI Service\pcisv.exe
- %Application Data%\{GUID}\run.dat
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.. %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Other System Modifications
This Ransomware adds the following registry entries:
HKLM\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
PCI Service = C:\Program Files\PCI Service\pcisv.exe
Other Details
This Ransomware connects to the following website to send and receive information:
- http://{BLOCKED}nfood.hol.es/Ransomware/Ransom.php?info={Machine name}-{Username} {Key}
Ransomware Routine
This Ransomware encrypts files with the following extensions:
- .sln
- .php
- .asp
- .aspx
- .html
- .xml
- .psd
- .txt
- .doc
- .docx
- .xls
- .xlsx
- .ppt
- .pptx
- .odt
- .jpg
- .png
- .csv
- .sql
- .mdb
It encrypts files found in the following folders:
- %Desktop%\
- %Desktop%\{Subfolders}
(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It appends the following extension to the file name of the encrypted files:
- .andonio
It drops the following file(s) as ransom note:
- %Desktop%\READ ME.txt
(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
NOTES:
The ransomware displays the following windows:
Contains the following ransom note:
SOLUTION
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 Safe Mode
Step 4
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- PCI Service = C:\Program Files\PCI Service\pcisv.exe
- PCI Service = C:\Program Files\PCI Service\pcisv.exe
Step 5
Search and delete these files
- %User Temp%\Sony.exe
- %User Temp%\Sony Vegas Pro 15.0.exe
- %User Temp%\1.exe
- %User Temp%\2.exe
- %Program Files%\PCI Service\pcisv.exe
- %Application Data%\{GUID}\run.dat
- %Desktop%\READ ME.txt
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom_HiddenTearADONIO.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 7
Restore encrypted files from backup.
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