Ransom.Win32.MAKOP.J
Ransom:Win32/Phobos.PB!MTB (MICROSOFT),
Fileless
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 drops files as ransom note. It avoids encrypting files with the following file extensions.
TECHNICAL DETAILS
36,352 bytes
EXE
Yes
06 Jan 2021
Displays message/message boxes, Encrypts files, Terminates processes
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 adds the following processes:
- vssadmin delete shadows /all /quiet
- wbadmin delete catalog -quiet
- wmic shadowcopy delete
Autostart Technique
This Ransomware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
1 = {Malware Path}\{Malware Filename}.exe
Process Termination
This Ransomware terminates the following processes if found running in the affected system's memory:
- agntsrvc.exe
- dbeng50.exe
- dbsnmp.exe
- encsvc.exe
- excel.exe
- firefoxconfig.exe
- infopath.exe
- isqlplussvc.exe
- msaccess.exe
- msftesql.exe
- mspub.exe
- mydesktopqos.exe
- mydesktopservice.exe
- mysqld-nt.exe
- mysqld-opt.exe
- mysqld.exe
- ocautoupds.exe
- ocomm.exe
- ocssd.exe
- onenote.exe
- oracle.exe
- outlook.exe
- powerpnt.exe
- sqbcoreservice.exe
- sqlagent.exe
- sqlbrowser.exe
- sqlservr.exe
- sqlwriter.exe
- steam.exe
- synctime.exe
- tbirdconfig.exe
- thebat.exe
- thebat64.exe
- thunderbird.exe
- visio.exe
- winword.exe
- wordpadexe
- xfssvccon.exe
Ransomware Routine
This Ransomware avoids encrypting files found in the following folders:
- C:\Windows
- C:\ProgramData\microsoft\windows\caches
- C:\Users\All Users\Microsoft\Windows\Caches
- C:\ProgramData
- C:\Users
It appends the following extension to the file name of the encrypted files:
- .[{8 Random Characters}].[{BLOCKED}change@qq.com].fair
It drops the following file(s) as ransom note:
- {Encrypted Directory}\readme-warning.txt
It avoids encrypting files with the following file extensions:
- makop
- CARLOS
- shootlock
- shootlock2
- 1recoesufV8Sv6g
- 1recocr8M4YJskJ7
- btc
- KJHslgjkjdfg
- origami
- tomas
- RAGA
- zbw
- fireee
- XXX
- element
- HELP
- zes
- lockbit
- captcha
- gunga
- fair
- exe
- dll
SOLUTION
9.800
16.544.02
17 Feb 2021
16.545.00
18 Feb 2021
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:
- Troj.Win32.TRX.XXPE50FFF041
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
Restart in Safe Mode
Step 5
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- 1 = {Malware Path}\{Malware Filename}.exe
- 1 = {Malware Path}\{Malware Filename}.exe
Step 6
Search and delete this file
- {Encrypted Directory}\readme-warning.txt
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.MAKOP.J. 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 8
Restore encrypted files from backup.
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