Ransom.Win32.JEST.A
Gen:Heur.Ransom.Imps.1 (BITDEFENDER); Trojan:Win32/Dynamer!rfn (MICROSOFT)
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Propagates via software vulnerabilities
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.
TECHNICAL DETAILS
7,408,128 bytes
EXE
Yes
24 Apr 2020
Displays graphics/image, Displays message/message boxes, 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:
- %All Users Profile%\chk.dat
- %All Users Profile%\MSWINSCK.OCX
- %All Users Profile%\encryptedfiles.eco --> list of encrypted files
- %Windows%\Logs\WindowsBackup\Wbadmin.0.etl
- %Public%\Desktop\README - Decryption Note.lnk
- %Public%\Desktop\Decryptor.lnk
- %All Users Profile%\note.ini --> Ransomnote
- %All Users Profile%\1.bmp
- %Windows%\Web\Wallpaper\Windows\img0.jpg
- %User Temp%\MpCmdRun.log
(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %Public% is the folder that serves as a repository of files or folders common to all users, which is usually C:\Users\Public in Windows Vista, 7, and 8.. %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 drops and executes the following files:
- %All Users Profile%\{Malware name}.exe
- %All Users Profile%\x86.exe --> deleted after, (drops %All Users Profile%\x64.exe if executed on a 64-bit machine)
- %All Users Profile%\recover.exe --> deleted after, copy of itself
- %All Users Profile%\rps.exe --> deleted after, used for propagation through SMB bruteforce attacks.
(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). )
It adds the following processes:
- "%System%\vssadmin.exe" delete shadows /all /quiet
- "%System%\wbem\WMIC.exe" shadowcopy delete
- "%System%\wbadmin.exe" delete catalog -quiet
- "%System%\bcdedit.exe" /set {default} bootstatuspolicy ignoreallfailures
- "%System%\bcdedit.exe" /set {default} recoveryenabled no
- "%System%\icacls.exe" %Windows%\Web\Wallpaper\Windows\img0.jpg /grant Users:F
- "%System%\WindowsPowerShell\v1.0\powershell.exe" -Enc {Base 64 code} -ExecutionPolicy Bypass -W Hidden -NonI --> for deleting system logs
- "%Program Files%\Windows Defender\mpcmdrun.exe" -removedefinitions -all --> for removing Windows Defender Signatures
- %All Users Profile%\x86.exe go::inc get::pwz token::getsys read::samz exit --> for executing mimikatz instance
- "%System%\cmd.exe" /c logoff{0-80}
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000(32-bit), Server 2003(32-bit), XP, Vista(64-bit), 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit) , or C:\Program Files (x86) in Windows XP(64-bit), Vista(64-bit), 7(64-bit), 8(64-bit), 8.1(64-bit), 2008(64-bit), 2012(64-bit) and 10(64-bit).. %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). )
Autostart Technique
This Ransomware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
BWGBXD = "%All Users Profile%\{Malware name}.exe" -ui
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
BWGBXD = "%All Users Profile%\{Malware name}.exe" -ui
Other System Modifications
This Ransomware adds the following registry entries:
HKEY_LOCAL_MACHINE\BCD00000000\Objects\
{GUID}\Elements\250000e0
Element = 01 00 00 00 00 00 00 00
HKEY_LOCAL_MACHINE\BCD00000000\Objects\
{GUID}\Elements\16000009
Element = 00
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
ThreadingModel = Apartment
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
"" = %All Users Profile%\MSWINSCK.OCX
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
"" = Microsoft WinSock Control, version 6.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock
"" = Microsoft WinSock Control, version 6.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock\CLSID
"" = {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock\CurVer
"" = MSWinsock.Winsock.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock.1
"" = Microsoft WinSock Control, version 6.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock.1\CLSID
"" = {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\VersionIndependentProgID
"" = MSWinsock.Winsock
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ProgID
"" = MSWinsock.Winsock.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
"" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Version
"" = 1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus
"" = 0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus\
1
"" = 132497
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ToolboxBitmap32
"" = %All Users Profile%\MSWINSCK.OCX, 1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}
"" = Winsock General Property Page Object
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
"" = %All Users Profile%\MSWINSCK.OCX
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0
"" = Microsoft Winsock Control 6.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
FLAGS
"" = 2
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
0\win32
"" = %All Users Profile%\MSWINSCK.OCX
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
HELPDIR
"" = IMSWinsockControl
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid
"" = {00020424-0000-0000-C000-000000000046}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32
"" = {00020424-0000-0000-C000-000000000046}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
"" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
Version = 1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}
"" = DMSWinsockControlEvents
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid
"" = {00020420-0000-0000-C000-000000000046}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32
"" = {00020420-0000-0000-C000-000000000046}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
"" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
Version = 1
HKEY_CURRENT_USER\Control Panel\Desktop
TileWallpaper = 0
HKEY_CURRENT_USER\Control Panel\Desktop
WallpaperStyle = 10
HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %All Users Profile%\1.bmp
HKEY_CURRENT_USER\Control Panel\Desktop
OriginalWallpaper = %All Users Profile%\1.bmp
HKEY_CURRENT_USER\Control Panel\Desktop
ConvertedWallpaper = %All Users Profile%\1.bmp
Other Details
This Ransomware adds the following registry keys:
HKEY_LOCAL_MACHINE\BCD00000000\Objects\
{GUID}\Elements\250000e0
HKEY_LOCAL_MACHINE\BCD00000000\Objects\
{GUID}\Elements\16000009
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock\CurVer
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock.1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
MSWinsock.Winsock.1\CLSID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\VersionIndependentProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ProgID
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Version
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\
{40FC6ED5-2438-11CF-A3DB-080036F12502}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Programmable
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Control
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus\
1
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ToolboxBitmap32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\
{40FC6ED4-2438-11CF-A3DB-080036F12502}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\
{0DE86A57-2BAA-11CF-A229-00AA003D7352}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\
{0DE86A53-2BAA-11CF-A229-00AA003D7352}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories\
{0DE86A52-2BAA-11CF-A229-00AA003D7352}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\
HELPDIR
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
It encrypts files with the following extensions:
- .3fr
- .ACCDB
- .ACCDE
- .ACCDR
- .ACCDT
- .ai
- .arw
- .asp
- .aspx
- .bac
- .kupdb
- .bak
- .bas
- .bay
- .cdr
- .cer
- .cfg
- .class
- .conf
- .config
- .cpp
- .cr2
- .crt
- .crw
- .cs
- .css
- .db
- .dbf
- .dcr
- .cder
- .dng
- .doc
- .docb
- .docm
- .docx
- .dot
- .dotm
- .dotx
- .dwg
- .dxf
- .dxg
- .edb
- .eps
- .erf
- .flt
- .htm
- .html
- .indd
- .java
- .jpe
- .jpeg
- .jpg
- .kdc
- .log
- .mdb
- .mdf
- .mef
- .mrw
- .ned
- .nef
- .nrp
- .nrw
- .ntm
- .odb
- .odb
- .odp
- .ods
- .odt
- .orf
- .ost
- .ov
- .p12
- .p7b
- .p7c
- .pdd
- .pef
- .pem
- .pfx
- .php
- .png
- .pot
- .potm
- .potx
- .ppam
- .pps
- .ppsm
- .ppsx
- .ppt
- .pptm
- .proj
- .psd
- .pst
- .py
- .pyc
- .r3d
- .rar
- .raw
- .rtf
- .rw2
- .rwl
- .sld
- .sldx
- .sln
- .sql
- .srf
- .srw
- .txt
- .vb
- .v,dk
- .vmx
- .wb2
- .wpd
- .wps
- .xla
- .xlam
- .xlk
- .xll
- .xlm
- .xls
- .xlsb
- .xlsm
- .xlsx
- .xlt
- .xltm
- .xltx
- .xlw
- .xml
- .zip
It does the following:
- It encrypts files in all fixed and removable drives.
- It is capable of propagating in the local network via the following means:
- SMB Bruteforcing
- Dumping Windows Domain Credentials using any of the following techniques/tools:
- Mimikatz
- It executes the following commands to terminate processes:
- "%System%\taskkill.exe" /F /IM MSExchange*
- "%System%\taskkill.exe" /F /IM Microsoft.Exchange.*
- "%System%\taskkill.exe" /F /IM vmware*.exe
- It restarts the machine after execution and displays a GUI after startup:
- It changes the desktop background:
Ransomware Routine
This Ransomware appends the following extension to the file name of the encrypted files:
- .jest
It drops the following file(s) as ransom note:
- %All Users Profile%\note.ini
SOLUTION
9.850
15.826.07
24 Apr 2020
15.827.00
25 Apr 2020
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
Identify and terminate files detected as Ransom.Win32.JEST.A
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Restart in Safe Mode
Step 4
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\BCD00000000\Objects\{GUID}\Elements
- 250000e0
- 250000e0
- In HKEY_LOCAL_MACHINE\BCD00000000\Objects\{GUID}\Elements
- 16000009
- 16000009
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- InprocServer32
- InprocServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- MSWinsock.Winsock
- MSWinsock.Winsock
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock
- CLSID
- CLSID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock
- CurVer
- CurVer
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
- MSWinsock.Winsock.1
- MSWinsock.Winsock.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1
- CLSID
- CLSID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- VersionIndependentProgID
- VersionIndependentProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- ProgID
- ProgID
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- TypeLib
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- Version
- Version
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- Implemented Categories
- Implemented Categories
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories
- {40FC6ED5-2438-11CF-A3DB-080036F12502}
- {40FC6ED5-2438-11CF-A3DB-080036F12502}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- Programmable
- Programmable
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- Control
- Control
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- MiscStatus
- MiscStatus
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus
- 1
- 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- ToolboxBitmap32
- ToolboxBitmap32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories
- {40FC6ED4-2438-11CF-A3DB-080036F12502}
- {40FC6ED4-2438-11CF-A3DB-080036F12502}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories
- {0DE86A57-2BAA-11CF-A229-00AA003D7352}
- {0DE86A57-2BAA-11CF-A229-00AA003D7352}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories
- {0DE86A53-2BAA-11CF-A229-00AA003D7352}
- {0DE86A53-2BAA-11CF-A229-00AA003D7352}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Implemented Categories
- {0DE86A52-2BAA-11CF-A229-00AA003D7352}
- {0DE86A52-2BAA-11CF-A229-00AA003D7352}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
- {248DD897-BB45-11CF-9ABC-0080C7E7B78D}
- {248DD897-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}
- InprocServer32
- InprocServer32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- 1.0
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0
- FLAGS
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0
- 0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\0
- win32
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0
- HELPDIR
- HELPDIR
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
- {248DD892-BB45-11CF-9ABC-0080C7E7B78D}
- {248DD892-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}
- ProxyStubClsid
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}
- ProxyStubClsid32
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}
- TypeLib
- TypeLib
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}
- ProxyStubClsid
- ProxyStubClsid
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}
- ProxyStubClsid32
- ProxyStubClsid32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}
- TypeLib
- TypeLib
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_LOCAL_MACHINE\BCD00000000\Objects\{GUID}\Elements\250000e0
- Element = 01 00 00 00 00 00 00 00
- Element = 01 00 00 00 00 00 00 00
- In HKEY_LOCAL_MACHINE\BCD00000000\Objects\{GUID}\Elements\16000009
- Element = 00
- Element = 00
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
- ThreadingModel = Apartment
- ThreadingModel = Apartment
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
- "" = %All Users Profile%\MSWINSCK.OCX
- "" = %All Users Profile%\MSWINSCK.OCX
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- "" = Microsoft WinSock Control, version 6.0
- "" = Microsoft WinSock Control, version 6.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock
- "" = Microsoft WinSock Control, version 6.0
- "" = Microsoft WinSock Control, version 6.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CLSID
- "" = {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- "" = {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock\CurVer
- "" = MSWinsock.Winsock.1
- "" = MSWinsock.Winsock.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1
- "" = Microsoft WinSock Control, version 6.0
- "" = Microsoft WinSock Control, version 6.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\MSWinsock.Winsock.1\CLSID
- "" = {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- "" = {248DD896-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\VersionIndependentProgID
- "" = MSWinsock.Winsock
- "" = MSWinsock.Winsock
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ProgID
- "" = MSWinsock.Winsock.1
- "" = MSWinsock.Winsock.1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
- "" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- "" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\Version
- "" = 1.0
- "" = 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus
- "" = 0
- "" = 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\MiscStatus\1
- "" = 132497
- "" = 132497
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD896-BB45-11CF-9ABC-0080C7E7B78D}\ToolboxBitmap32
- "" = %All Users Profile%\MSWINSCK.OCX, 1
- "" = %All Users Profile%\MSWINSCK.OCX, 1
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}
- "" = Winsock General Property Page Object
- "" = Winsock General Property Page Object
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{248DD897-BB45-11CF-9ABC-0080C7E7B78D}\InprocServer32
- "" = %All Users Profile%\MSWINSCK.OCX
- "" = %All Users Profile%\MSWINSCK.OCX
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0
- "" = Microsoft Winsock Control 6.0
- "" = Microsoft Winsock Control 6.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\FLAGS
- "" = 2
- "" = 2
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\0\win32
- "" = %All Users Profile%\MSWINSCK.OCX
- "" = %All Users Profile%\MSWINSCK.OCX
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{248DD890-BB45-11CF-9ABC-0080C7E7B78D}\1.0\HELPDIR
- "" = IMSWinsockControl
- "" = IMSWinsockControl
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid
- "" = {00020424-0000-0000-C000-000000000046}
- "" = {00020424-0000-0000-C000-000000000046}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32
- "" = {00020424-0000-0000-C000-000000000046}
- "" = {00020424-0000-0000-C000-000000000046}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
- "" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- "" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD892-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
- Version = 1.0
- Version = 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}
- "" = DMSWinsockControlEvents
- "" = DMSWinsockControlEvents
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid
- "" = {00020420-0000-0000-C000-000000000046}
- "" = {00020420-0000-0000-C000-000000000046}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\ProxyStubClsid32
- "" = {00020420-0000-0000-C000-000000000046}
- "" = {00020420-0000-0000-C000-000000000046}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
- "" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- "" = {248DD890-BB45-11CF-9ABC-0080C7E7B78D}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{248DD893-BB45-11CF-9ABC-0080C7E7B78D}\TypeLib
- Version = 1
- Version = 1
- In HKEY_CURRENT_USER\Control Panel\Desktop
- TileWallpaper = 0
- TileWallpaper = 0
- In HKEY_CURRENT_USER\Control Panel\Desktop
- WallpaperStyle = 10
- WallpaperStyle = 10
- In HKEY_CURRENT_USER\Control Panel\Desktop
- Wallpaper = %All Users Profile%\1.bmp
- Wallpaper = %All Users Profile%\1.bmp
- In HKEY_CURRENT_USER\Control Panel\Desktop
- OriginalWallpaper = %All Users Profile%\1.bmp
- OriginalWallpaper = %All Users Profile%\1.bmp
- In HKEY_CURRENT_USER\Control Panel\Desktop
- ConvertedWallpaper = %All Users Profile%\1.bmp
- ConvertedWallpaper = %All Users Profile%\1.bmp
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- BWGBXD = "%All Users Profile%\{Malware name}.exe" -ui
- BWGBXD = "%All Users Profile%\{Malware name}.exe" -ui
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- BWGBXD = "%All Users Profile%\{Malware name}.exe" -ui
- BWGBXD = "%All Users Profile%\{Malware name}.exe" -ui
Step 6
Search and delete these files
- %All Users Profile%\{Malware name}.exe
- %All Users Profile%\chk.dat
- %All Users Profile%\MSWINSCK.OCX
- %All Users Profile%\encryptedfiles.eco
- %Windows%\Logs\WindowsBackup\Wbadmin.0.etl
- %Public%\Desktop\README - Decryption Note.lnk
- %Public%\Desktop\Decryptor.lnk
- %All Users Profile%\note.ini
- %All Users Profile%\1.bmp
- %Windows%\Web\Wallpaper\Windows\img0.jpg
- %User Temp%\MpCmdRun.log
- %All Users Profile%\x86.exe
- %All Users Profile%\recover.exe
- %All Users Profile%\rps.exe
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.JEST.A. 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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