Ransom.Win32.SODINOKIBI.AUWUJDES
a variant of Win32/Kryptik.HGZV trojan (Nod32), W32/Kryptik.CGZ.gen!Eldorado (generic, not disinfectable) (FPRot)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Ransomware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Dropped by other malware, 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 avoids encrypting files with the following file extensions.
TECHNICAL DETAILS
165,888 bytes
EXE
Yes
25 Oct 2020
Displays message/message boxes, Disables services, Terminates processes, Displays graphics/image, Encrypts files
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:
- %User Temp%\{random characters}.bmp -> used as wallpaper
(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 mutexes to ensure that only one of its copies runs at any one time:
- Global\{GUID}
Other System Modifications
This Ransomware adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
K6a = {hex values}
HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
kZpZ = {hex values}
HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
28XOs = {hex values}
HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
mlEdtU = {hex values}
HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
SUdOP6A = .{appended extension}
HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
etdwNrNw = {hex values}
It modifies the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\Session Manager
PendingFileRenameOperations = {adds ??\{Malware Path}\{Malware Name}.exe to the existing list}
It changes the desktop wallpaper by modifying the following registry entries:
HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %User Temp%\{random characters}.bmp
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:
- agntsvc
- avagent
- avscc
- bedbh
- benetns
- bengien
- beserver
- CagService
- cvd
- cvfwd
- CVMountd
- CVODS
- dbeng50
- dbsnmp
- DellSystemDetect
- disk+work
- encsvc
- EnterpriseClient
- excel
- firefox
- infopath
- isqlplussvc
- msaccess
- mspub
- mydesktopqos
- mydesktopservice
- ocautoupds
- ocomm
- ocssd
- onenote
- oracle
- outlook
- powerpnt
- pvlsvr
- QBCFMonitorService
- QBDBMgrN
- QBIDPService
- raw_agent_svc
- SAP
- saphostexec
- saposcol
- sapstartsrv
- sqbcoreservice
- sql
- steam
- synctime
- tbirdconfig
- TeamViewer.exe
- TeamViewer_Service.exe
- thebat
- thunderbird
- tv_w32.exe
- tv_x64.exe
- VeeamDeploymentSvc
- VeeamNFSSvc
- VeeamTransportSvc
- visio
- vsnapvss
- vxmon
- winword
- wordpad
- xfssvccon
It terminates the following processes if found running in the affected system's memory:
- agntsvc
- avagent
- avscc
- bedbh
- benetns
- bengien
- beserver
- CagService
- cvd
- cvfwd
- CVMountd
- CVODS
- dbeng50
- dbsnmp
- DellSystemDetect
- disk+work
- encsvc
- EnterpriseClient
- excel
- firefox
- infopath
- isqlplussvc
- msaccess
- mspub
- mydesktopqos
- mydesktopservice
- ocautoupds
- ocomm
- ocssd
- onenote
- oracle
- outlook
- powerpnt
- pvlsvr
- QBCFMonitorService
- QBDBMgrN
- QBIDPService
- raw_agent_svc
- SAP
- saphostexec
- saposcol
- sapstartsrv
- sqbcoreservice
- sql
- steam
- synctime
- tbirdconfig
- TeamViewer.exe
- TeamViewer_Service.exe
- thebat
- thunderbird
- tv_w32.exe
- tv_x64.exe
- VeeamDeploymentSvc
- VeeamNFSSvc
- VeeamTransportSvc
- visio
- vsnapvss
- vxmon
- winword
- wordpad
- xfssvccon
Other Details
This Ransomware adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
It does the following:
- It will terminate itself if the affected system's keyboard layout is any of the following:
- Arabic - Syria
- Armenian
- Azerbaijan
- Azerbaijani - Azerbaijan (Cyrillic)
- Belarusian
- Georgian
- Kazakhstan
- Kyrgyzstan
- Romanian - (Moldova)
- Russian
- Russian - (Moldova)
- Syriac - Syria
- Tajikistan
- Tatar – Russia
- Turkmenistan
- Ukrainian
- Uzbek - Uzbekistan (Cyrillic)
- Uzbekistan
- It wipes the contents of the following folder(s):
- archive
- back
- backup
- bck
- It accepts the following arguments:
- -silent - skips the following:
- Termination of blacklisted processes and services
- Removal of shadow copies
- -path - specifies directory to be encrypted
- -nolocal - avoids encrypting fixed and removable drives
- -nolan - avoids encrypting network and shared drives
- -fast - fast encryption mode
- -silent - skips the following:
- It removes the encrypted folder's access control list permissions if the current user has full control
Ransomware Routine
This Ransomware avoids encrypting files with the following strings in their file name:
- ntldr
- desktop.ini
- iconcache.db
- boot.ini
- bootfont.bin
- autorun.inf
- thumbs.db
- ntuser.dat
- ntuser.dat.log
- bootsect.bak
- ntuser.ini
It avoids encrypting files found in the following folders:
- program files
- windows.old
- programdata
- perflogs
- $windows.~bt
- appdata
- application data
- $windows.~ws
- windows
- tor browser
- msocache
- program files (x86)
- boot
- intel
- $recycle.bin
- mozilla
- system volume information
It appends the following extension to the file name of the encrypted files:
- .{random characters}
It leaves text files that serve as ransom notes containing the following text:
- {encrypted directory}\{appended extension}-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
- prf
- ps1
- rom
- rtp
- scr
- shs
- spl
- sys
- theme
- themepack
- wpx
SOLUTION
9.800
16.310.03
26 Oct 2020
16.311.00
27 Oct 2020
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.XXPE50FFF037
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 key: HKEY_LOCAL_MACHINE\SOFTWARE\BlackLivesMatter
- K6a = {Hex values}
- K6a = {Hex values}
- In key: HKEY_LOCAL_MACHINE \SOFTWARE\BlackLivesMatter
- kZpZ = {Hex values}
- kZpZ = {Hex values}
- In HKEY_LOCAL_MACHINE \SOFTWARE\BlackLivesMatter
- 28XOs = {Hex values}
- 28XOs = {Hex values}
- In HKEY_LOCAL_MACHINE \SOFTWARE\BlackLivesMatter
- mlEdtU = {Hex values}
- mlEdtU = {Hex values}
- In HKEY_LOCAL_MACHINE \SOFTWARE\BlackLivesMatter
- SUdOP6A = .{appended extension}
- SUdOP6A = .{appended extension}
- In HKEY_LOCAL_MACHINE \SOFTWARE\BlackLivesMatter
- etdwNrNw = {Hex values}
- etdwNrNw = {Hex values}
Step 6
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_LOCAL_MACHINE \SOFTWARE\BlackLivesMatter
Step 7
Restore this modified 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\SYSTEM\ControlSet001\Control\Session Manager
- PendingFileRenameOperations = {remove {Malware Path}\{Malware Name}.exe from the list}
- PendingFileRenameOperations = {remove {Malware Path}\{Malware Name}.exe from the list}
Step 8
Search and delete this file
- %User Temp%\{random characters}.bmp
- {encrypted directory}\{appended extension}-readme.txt
Step 9
Reset your Desktop properties
Step 10
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.SODINOKIBI.AUWUJDES. 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 11
Restore encrypted files from backup.
NOTES:
To restore the encrypted folders’ access control list permissions, run the command prompt or cmd.exe as an administrator then add following arguments:
- icacls "{full path of the folder}" /reset /t /c /l
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