Ransom.Win32.LOCKBIT.EOH
Ransom:Win32/Lockbit!ic (MICROSOFT)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Ransomware
Destructiveness: No
Encrypted:
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 drops files as ransom note. It avoids encrypting files with the following file extensions.
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 files:
- %ProgramData%\qR8tixVvx.ico → icon used for all encrypted files.
- %ProgramData%\qR8tixVvx.bmp → image to set as system wallpaper after encryption.
(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 adds the following mutexes to ensure that only one of its copies runs at any one time:
- Global\{Generated Hash}
Other System Modifications
This Ransomware adds the following registry entries:
HKEY_LOCAL_MACHINE\Software\Classes\
.qR8tixVvx
(Default) = .qR8tixVvx
HKEY_LOCAL_MACHINE\Software\Classes\
.qR8tixVvx
(Default) = %ProgramData%\qR8tixVvx.ico
HKEY_LOCAL_MACHINE\Software\Classes\
qR8tixVvx
It changes the desktop wallpaper by modifying the following registry entries:
HKEY_CURRENT_MACHINE\Control Panel\Desktop
WallPaper = %ProgramData%\qR8tixVvx.bmp
It sets the system's desktop wallpaper to the following image:
- It sets the system's desktop wallpaper to the following image:
Process Termination
This Ransomware terminates the following services if found on the affected system:
- backup
- GxBlr
- GxCIMgr
- GxCVD
- GxFWD
- GxVss
- memtas
- mepocs
- msexchange
- sophos
- sql
- svc$
- veeam
- vss
It terminates the following processes if found running in the affected system's memory:
- agntsvc
- calc
- dbeng50
- dbsnmp
- encsvc
- excel
- firefox
- infopath
- isqlplussvc
- msaccess
- mspub
- mydesktopqos
- mydesktopservice
- notepad
- ocautoupds
- ocomm
- ocssd
- onedrive
- onenote
- oracle
- outlook
- powerpnt
- sqbcoreservice
- sql
- steam
- synctime
- tbirdconfig
- thebat
- thunderbird
- visio
- winword
- wordpad
- wuauclt
- xfssvccon
Other Details
This Ransomware does the following:
- It changes the encrypted file icon to the following image:
- It encrypts fixed, removable and network shares
- If not executed with admin rights, it will attempt relaunch itself as admin by elevating its privileges via bypassing UAC.
- It deletes files in recycle bin folder for removable and fixed drives
- It uses WQL to delete shadow copies
- It terminates if the machine has the following system language:
- Arabic (Syria)
- Armenian (Armenia)
- Azerbaijani (Cyrillic Azerbaijan)
- Azerbaijani (Latin Azerbaijan)
- Belarusian (Belarus)
- Georgian (Georgia)
- Kazakh (Kazakhstan)
- Kyrgyz (Kyrgyzstan)
- Russian (Moldova)
- Russian (Russia)
- Tajik (Cyrillic Tajikistan)
- Tatar (Russia) Romanian (Moldova)
- Turkmen (Turkmenistan)
- Ukranian (Ukraine)
- Uzbek (Cyrillic Uzbekistan)
- Uzbek (Latin Uzbekistan)
- It deletes the following services:
- WdBoot
- WdFilter
- WdNisDrv
- WdNisSvc
- WinDefend
- wscsvc
- sppsvc
- Sense
- SecurityHealthService
It accepts the following parameters:
- -safe →Reboots in safeboot, then encrypts the user's machine
- -wall → Changes system Wallpaper and Print ransom note on printers then deletes itself after renaming for 26 times.
- -path {target} → Specifically encrypt the target, can be file or folder
- -del → Deletes itself after renaming for 26 times.
Ransomware Routine
This Ransomware avoids encrypting files with the following strings in their file name:
- autorun.inf
- boot.ini
- bootfont.bin
- bootsect.bak
- d3d9caps.dat
- desktop.ini
- GDIPFONTCACHEV1.DAT
- iconcache.db
- ntldr
- ntuser.dat
- ntuser.dat.log
- ntuser.ini
- thumbs.db
It avoids encrypting files found in the following folders:
- $recycle.bin
- $windows.~bt
- $windows.~ws
- all users
- boot
- config.msi
- default
- intel
- microsoft
- msocache
- perflogs
- program files
- program files (x86)
- programdata
- public
- system volume information
- tor browser
- windows
- windows.old
- x64dbg
It appends the following extension to the file name of the encrypted files:
- .qR8tixVvx
It drops the following file(s) as ransom note:
- It drops the following file(s) as ransom note:
{Encrypted Directory}\qR8tixVvx.README.txt
It avoids encrypting files with the following file extensions:
- 386
- adv
- ani
- bat
- bin
- cab
- cmd
- com
- cpl
- cur
- deskthemepack
- diagcab
- diagcfg
- diagpkg
- dll
- drv
- exe
- hlp
- hta
- icl
- icns
- ico
- ics
- idx
- key
- ldf
- lnk
- lock
- mod
- mpa
- msc
- msi
- msp
- msstyles
- msu
- nls
- nomedia
- ocx
- pdb
- prf
- ps1
- rom
- rtp
- scr
- search-ms
- shs
- spl
- sys
- theme
- themepack
- wpx
SOLUTION
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.XXPE50FFF075
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_LOCAL_MACHINE\Software\Classes\.qR8tixVvx
- (Default) = .qR8tixVvx
- (Default) = .qR8tixVvx
- In HKEY_LOCAL_MACHINE\Software\Classes\.qR8tixVvx
- (Default) = %ProgramData%\qR8tixVvx.ico
- (Default) = %ProgramData%\qR8tixVvx.ico
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. 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.
- In HKEY_LOCAL_MACHINE\Software\Classes\qR8tixVvx
Step 6
Search and delete this file
- %ProgramData%\qR8tixVvx.ico
- %ProgramData%\qR8tixVvx.bmp
- {Encrypted Directory}\qR8tixVvx.README.txt
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.LOCKBIT.EOH. 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.
Step 9
Reset your Desktop properties
Step 10
Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.LOCKBIT.EOH. 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:
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