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Ransom.Win32.MIMIC.YXDGS

July 28, 2023
 ALIASES:

UDS:Trojan-Ransom.Win32.Generic (KASPERSKY)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

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.

  TECHNICAL DETAILS

File Size:

2,913,981 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

19 Jul 2023

Payload:

Drops files, Modifies system registry, 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%\7ZipSfx.000
  • %User Temp%\7ZipSfx.000\7za.exe
  • %User Temp%\7ZipSfx.000\Everything.exe
  • %User Temp%\7ZipSfx.000\Everything32.dll
  • %User Temp%\7ZipSfx.000\Everything64.dll
  • %User Temp%\7ZipSfx.000\Everything.ini
  • %User Temp%\7ZipSfx.000\Everything2.ini
  • %User Temp%\7ZipSfx.000\DC.exe
  • %User Temp%\7ZipSfx.000\Peninsuela.exe
  • %User Temp%\7ZipSfx.000\sdel.exe
  • %User Temp%\7ZipSfx.000\sdel64.exe
  • %User Temp%\7ZipSfx.000\session.tmp
  • %AppDataLocal%\{{Random Characters}}\7za.exe
  • %AppDataLocal%\{{Random Characters}}\DC.exe
  • %AppDataLocal%\{{Random Characters}}\Everything.exe
  • %AppDataLocal%\{{Random Characters}}\Everything.ini
  • %AppDataLocal%\{{Random Characters}}\Everything2.ini
  • %AppDataLocal%\{{Random Characters}}\Everything32.dll
  • %AppDataLocal%\{{Random Characters}}\Everything64.dll
  • %AppDataLocal%\{{Random Characters}}\BITCOIN.exe
  • %AppDataLocal%\{{Random Characters}}\sdel.exe
  • %AppDataLocal%\{{Random Characters}}\sdel64.exe
  • %AppDataLocal%\{{Random Characters}}\session.tmp
  • %System Root%\OMO_OMO_Decryption.txt

(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).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

It adds the following processes:

  • "%User Temp%\7zipSfx.000\7za.exe" I
  • "%User Temp%\7zipSfx.000\7za.exe" x -y -p1949911452596921523 Everything64.dll
  • %User Temp%\7zipSfx.000\Peninsula.exe"
  • %AppDataLocal%\{{Random Characters}}\BITCOIN.exe
  • cmd.exe /c DC.exe /D
  • "%AppDataLocal%\{{Random Characters}}\BITCOIN.exe" -e watch -pid {PID} -!
  • "%AppDataLocal%\{{Random Characters}}\BITCOIN.exe" -e ul1
  • "%AppDataLocal%\{{Random Characters}}\BITCOIN.exe" -e ul2
  • "%Prgoram Files%\Everything\Everything.exe" -startup
  • cmd /c ""%User Temp%\7ZSfx000.cmd" "
  • powercfg.exe -H off
  • powercfg.exe -SETACVALUEINDEX {Random Hex Values 1} 0
  • powercfg.exe -SETACVALUEINDEX {Random Hex Values 2} 0
  • powercfg.exe -SETACVALUEINDEX {Random Hex Values 3} 0
  • powercfg.exe -SETDCVALUEINDEX {Random Hex Values 1} 0
  • powercfg.exe -SETDCVALUEINDEX {Random Hex Values 2} 0
  • powercfg.exe -SETDCVALUEINDEX {Random Hex Values 3} 0
  • powercfg.exe -SETACVALUEINDEX {Random Hex Values 1} 0
  • powercfg.exe -SETACVALUEINDEX {Random Hex Values 2} 0
  • powercfg.exe -SETACVALUEINDEX {Random Hex Values 3} 0
  • powercfg.exe -SETDCVALUEINDEX {Random Hex Values 1} 0
  • powercfg.exe -SETDCVALUEINDEX {Random Hex Values 2} 0
  • powercfg.exe -SETDCVALUEINDEX {Random Hex Values 3} 0
  • powercfg.exe -S {Random Hex Values 4}
  • powercfg.exe -S {Random Hex Values 5}
  • powercfg.exe -ExecutionPolicy Bypass "Get -VM | Stop-VM"
  • powercfg.exe -ExecutionPolicy Bypass "Get -VM | Select-Object vmid | Get-VHD | %{Get-DiskImage-ImagePath $_.Path; Get-DiskImage-ImagePath $-.ParentPath} | Dismount-DiskImage"
  • powercfg.exe -ExecutionPolicy Bypass "Get -Volume | Get-DiskImage | Dismount-DiskImage"

(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).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

  • %User Temp%\7ZipSfx.000
  • %AppDataLocal%\{GUID}
  • %System Root%\temp

(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).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

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
BITCOIN.exe = notepad.exe "%AppDataLocal%\OMO_OMO_Decryption.txt

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Everything = %Progmra Files%\Everything\Everything.exe

It adds the following Image File Execution Options registry entries to automatically execute itself whenever certain applications are run:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Image File Execution Options\
{Service Name}
Debugger = %System%Systray.exe

Other System Modifications

This Ransomware adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\ Windows Defender
DisableAntiSpyware = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
HidePowerOptions = 1

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
shutdownwithoutlogon = 0

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
DataCollection
AllowTelemetry = 0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
mimicfile\shell\open\
command
(Default) = notepad.exe "%AppDataLocal%\OMO_OMO_Decryption.txt

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.org
(Default) = mimicfile

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Owner = {Random Hex Values}

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Session Hash = {Random Hex Values}

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Sequence = 1

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFiles0000 = %User Profile%\Documents\rem.edk

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFilesHash = {Random Hex Values}

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFiles0000 = %AppDataLocal%\Vmware\hgfs.dat

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFiles0000 = %AppDataLocal%\{{Random Characters}}\BITCOIN.exe

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
RegFiles0000 = %AppDataLocal%\{{Random Characters}}\Everything32.exe

HKEY_USERS\{SID}\exefile\
shell\open\command
(Default) = "%1" %*

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
HidePowerOptions = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
NoClose = 1

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer
StartMenuLogOff = 1

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\FileSystem
LongPathsEnabled = 1

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows Defender
DisableAntiSpyware = 1

(Note: The default value data of the said registry entry is 0.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows Defender\Real-Time Protection
DisableRealTimeMonitoring = 1

(Note: The default value data of the said registry entry is 0.)

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\WinDefend
Start = 3

(Note: The default value data of the said registry entry is 2.)

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\VSS
Start = 4

(Note: The default value data of the said registry entry is 3.)

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\SDRSVC
Start = 4

(Note: The default value data of the said registry entry is 3.)

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
services\wbengine
Start = 4

(Note: The default value data of the said registry entry is 3.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
ConsentPromptBehaviorAdmin = 0

(Note: The default value data of the said registry entry is 5.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
ConsentPromptBehaviorUser = 0

(Note: The default value data of the said registry entry is 3.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
PromptOnSecureDesktop = 0

(Note: The default value data of the said registry entry is 1.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
System
EnableLUA = 0

(Note: The default value data of the said registry entry is 1.)

Other Details

This Ransomware adds the following registry keys:

HKEY_USERS\{SID Class}\exefile

HKEY_USERS\{SID Class}\exefile\
shell

HKEY_USERS\{SID Class}\exefile\
shell\open

HKEY_USERS\{SID Class}\exefile\
shell\open\command

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\
Microsoft\Windows Defender

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Policies\
Explorer

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Explorer

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
Data Collection

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\FileSystem

HKEY_CURRENT_USER\Software\Policies\
Microsoft\Windows\System

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
mimicfile

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
mimicfile\shell

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
mimicfile\shell\open

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
mimic\shell\open\
command

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
.org

Ransomware Routine

This Ransomware appends the following extension to the file name of the encrypted files:

  • {BLOCKED}llakonososeila@gonionmail.org

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

18.592.05

FIRST VSAPI PATTERN DATE:

25 Jul 2023

VSAPI OPR PATTERN File:

18.593.00

VSAPI OPR PATTERN Date:

26 Jul 2023

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.XXPE50FSX036

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

[ Learn More ]

Step 5

Restore this modified registry value

[ Learn More ]

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\Microsoft\Windows Defender
    • DisableAntiSpyware = 1 (Change to default value: 0)
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender\Real-Time Protection
    • DisableRealTimeMonitoring = 1 (Change to default value: 0)
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\WinDefend
    • Start = 3 (Change to default value: 2)
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\VSS
    • Start = 4 (Change to default value: 3)
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\SDRSVC
    • Start = 4 (Change to default value: 3)
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\wbengine
    • Start = 4 (Change to default value: 3)
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • ConsentPromptBehaviorAdmin = 0  (Change to default value: 5)
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • ConsentPromptBehaviorUser = 0 (Change to default value: 3)
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • PromptOnSecureDesktop = 0  (Change to default value: 1)
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • EnableLUA = 0 (Change to default value: 1)

Step 6

Delete this registry value

[ Learn More ]

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\Policies\Microsoft\ Windows Defender
    • DisableAntiSpyware = 1
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer
    • HidePowerOptions = 1
  • In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
    • shutdownwithoutlogon = 0
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\DataCollection
    • AllowTelemetry = 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\mimicfile\shell\open\command
    • (Default) = notepad.exe "%AppDataLocal%\OMO_OMO_Decryption.txt
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\.org
    • (Default) = mimicfile
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Owner = {Random Hex Values}
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Session Hash = {Random Hex Values}
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • Sequence = 1
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFiles0000 = %User Profile%\Documents\rem.edk
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFilesHash = {Random Hex Values}
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFiles0000 = %AppDataLocal%\Vmware\hgfs.dat
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFiles0000 = %AppDataLocal%\{{Random Characters}}\BITCOIN.exe
  • In HKEY_CURRENT_USER\Software\Microsoft\RestartManager\Session0000
    • RegFiles0000 = %AppDataLocal%\{{Random Characters}}\Everything32.exe
  • In HKEY_USERS\{SID}\exefile\shell\open\command
    • (Default) = "%1" %*
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
    • HidePowerOptions = 1
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
    • NoClose = 1
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
    • StartMenuLogOff = 1
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\FileSystem
    • LongPathsEnabled = 1

Step 7

Delete this registry key

[ Learn More ]

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_USERS\{SID Class}\exefile\shell\open
    • command
  • In HKEY_USERS\{SID Class}\exefile\shell
    • open
  • In HKEY_USERS\{SID Class}\exefile
    • shell
  • In HKEY_USERS\{SID Class}
    • exefile
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft
    • Windows Defender
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies
    • Explorer
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies
    • Explorer
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies
    • System
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies
    • Data Collection
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control
    • FileSystem
  • In HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows
    • System
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\mimic\shell\open
    • command
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\mimic\shell
    • open
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\mimic
    • shell
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
    • mimic
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes
    • .org

Step 8

Search and delete this file

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %User Temp%\7ZipSfx.000
  • %User Temp%\7ZipSfx.000\7za.exe
  • %User Temp%\7ZipSfx.000\Everything.exe
  • %User Temp%\7ZipSfx.000\Everything32.dll
  • %User Temp%\7ZipSfx.000\Everything64.dll
  • %User Temp%\7ZipSfx.000\Everything.ini
  • %User Temp%\7ZipSfx.000\Everything2.ini
  • %User Temp%\7ZipSfx.000\DC.exe
  • %User Temp%\7ZipSfx.000\Peninsuela.exe
  • %User Temp%\7ZipSfx.000\sdel.exe
  • %User Temp%\7ZipSfx.000\sdel64.exe
  • %User Temp%\7ZipSfx.000\session.tmp
  • %AppDataLocal%\{{Random Characters}}\7za.exe
  • %AppDataLocal%\{{Random Characters}}\DC.exe
  • %AppDataLocal%\{{Random Characters}}\Everything.exe
  • %AppDataLocal%\{{Random Characters}}\Everything.ini
  • %AppDataLocal%\{{Random Characters}}\Everything2.ini
  • %AppDataLocal%\{{Random Characters}}\Everything32.dll
  • %AppDataLocal%\{{Random Characters}}\Everything64.dll
  • %AppDataLocal%\{{Random Characters}}\BITCOIN.exe
  • %AppDataLocal%\{{Random Characters}}\sdel.exe
  • %AppDataLocal%\{{Random Characters}}\sdel64.exe
  • %AppDataLocal%\{{Random Characters}}\session.tmp
  • %System Root%\OMO_OMO_Decryption.txt

Step 9

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %User Temp%\7ZipSfx.000
  • %AppDataLocal%\{GUID}
  • %System Root%\temp

Step 10

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.MIMIC.YXDGS. 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.

Step 12

Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.MIMIC.YXDGS. 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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