- Threat Encyclopedia
- Malware
- Ransom.Win32.RTMCOMMAND.THKBFBD
Ransom:Win32/RTMLocker.AA!MTB
Windows
Downloaded from the Internet, Dropped by other malware
This ransomware encrypts all drives except the CD-ROM.
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.
282,624 bytes
EXE
No
Encrypts files, Modifies system registry, Displays message/message boxes
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: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following processes:
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other System Modifications
This Ransomware changes the desktop wallpaper by modifying the following registry entries:
HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %User Temp%\img{3 Random Characters}.tmp
Process Termination
This Ransomware terminates the following services if found on the affected system:
It terminates the following processes if found running in the affected system's memory:
Other Details
This Ransomware does the following:
(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It accepts the following parameters:
Ransomware Routine
This Ransomware avoids encrypting files with the following strings in their file path:
It drops the following file(s) as ransom note:
9.800
18.404.05
24 Apr 2023
18.405.00
25 Apr 2023
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
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
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 4
Search and delete this file
Step 5
Reset your Desktop properties
Step 6
Restore encrypted files from backup.
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.RTMCOMMAND.THKBFBD. 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.