- Threat Encyclopedia
- Malware
- Ransom.Win32.LOCKBIT.EOD
Windows
Downloaded from the Internet, Dropped by other malware
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. It avoids encrypting files with the following file extensions.
450,459 bytes
EXE
No
01 May 2023
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 injects codes into the following process(es):
Autostart Technique
This Ransomware drops the following files:
Other System Modifications
This Ransomware adds the following registry entries as part of its installation routine:
HKEY_LOCALMACHINE\SOFTWARE\Classes\
Ck8GvVQ9E\DefaultIcon
(Default) = %ProgramData%Ck8GvVQ9E.ico
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.Ck8GvVQ9E
(Default) = Ck8GvVQ9E
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer
GlobalAssocChangedCounter = 0x00000027(39)
It adds the following registry keys as part of its installation routine:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.Ck8GvVQ9E
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Ck8GvVQ9E
HKEY_LOCALMACHINE\SOFTWARE\Classes\
Ck8GvVQ9E\DefaultIcon
Process Termination
This Ransomware terminates the following processes if found running in the affected system's memory:
Other Details
This Ransomware requires the following additional components to properly run:
It does the following:
(Note: %ProgramData% is a version of the Program Files folder where any user on a multi-user computer can make changes to programs. This contains application data for all users. This is usually C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit), or C:\Documents and Settings\All Users on Windows Server 2003(32-bit), 2000(32-bit) and XP.)
It accepts the following parameters:
Ransomware Routine
This Ransomware avoids encrypting files with the following strings in their file name:
It avoids encrypting files found in the following folders:
It renames encrypted files using the following names:
It drops the following file(s) as ransom note:
It avoids encrypting files with the following file extensions:
9.800
18.436.04
10 May 2023
18.437.00
11 May 2023
Step 1
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 2
Search and delete this file
Step 3
Delete this registry key
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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.
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.
Step 5
Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.LOCKBIT.EOD. 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 the following Trend Micro Support pages for more information: