Ransom.Win32.GLBYTE.THEBCBD
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
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 encrypts files found in specific folders. It drops files as ransom note.
TECHNICAL DETAILS
2,510,673 bytes
EXE
No
20 May 2024
Drops files, Encrypts files, Displays graphics/image, Displays windows
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:
- netsh firewall set opmode mode=disable profile=all
- vssadmin Delete Shadows /all /quiet
- bcdedit /set {default} bootstatuspolicy ignoreallfailures
- bcdedit /set {default} recoveryenabled no
- wmic shadowcopy delete
- wbadmin delete catalog –quiet
- rundll32.exe user32.dll,UpdatePerUserSystemParameters
- %Desktop%\GlitchByte_Decryptor.exe
(Note: %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other System Modifications
This Ransomware adds the following registry entries:
HKEY_CURRENT_USER\{76 Random Characters}
{76 Random Characters} = {Random Characters}
It changes the desktop wallpaper by modifying the following registry entries:
HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %Application Data%\GlitchByte.bmp
It sets the system's desktop wallpaper to the following image:
- %Application Data%\GlitchByte.bmp
Dropping Routine
This Ransomware drops the following files:
- %Application Data%\GlitchByte.bmp
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other Details
This Ransomware encrypts files with the following extensions:
- .accdb
- .bas
- .bmp
- .dib
- .doc
- .docx
- .jpeg
- .jpg
- .log
- .mp
- .mp3
- .mp4
- .png
- .ppt
- .pptx
- .pub
- .rtf
- .txt
- .vbe
- .vbs
- .wav
- .xsl
- .xslx
It does the following:
- It modifies the following files:
- %System%\drivers\etc\hosts
- www.malwarebytes.com
- malwarebytes.com
- www.bitdefender.com
- bitdefender.com
- www.avast.com
- avast.com
- www.symantec.com
- symantec.com
- www.avast.com
- avast.com
- www.virustotal.com
- virustotal.com
- www.tria.ge
- tria.ge
- www.cuckoo.cert.ee
- cuckoo.cert.ee
- www.hybrid-analysis.com
- hybrid-analysis.com
- www.crowdstrike.com
- crowdstrike.com
- www.go.crowdstrike.com
- go.crowdstrike.com
to block access to the following URLs:
- It displays the following on its console:
Ransomware Routine
This Ransomware encrypts files found in the following folders:
- C:\
It appends the following extension to the file name of the encrypted files:
- .GLBT
It drops the following file(s) as ransom note:
- %Desktop%\GlitchByte_Decryptor.exe → detected as Ransom.Win32.GLBYTE.THEBCBD.note
SOLUTION
9.800
19.358.01
22 May 2024
19.359.00
23 May 2024
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.XXPE50FFF082
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
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\{76 Random Characters}
- {76 Random Characters} = {Random}
- {76 Random Characters} = {Random}
Step 5
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.
- In HKEY_CURRENT_USER
- {76 Random Characters}
- {76 Random Characters}
Step 6
Search and delete these files
Step 7
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %System%\drivers\etc\hosts
Step 8
Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.GLBYTE.THEBCBD. 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:
Step 9
Restore encrypted files from backup.
Step 10
Reset your Desktop properties
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