RANSOM.WIN32.MONGOLOCK.THOAOBAI

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 deletes files in certain folders, disabling programs and applications from properly running.

It connects to certain websites to send and receive information.

It drops files as ransom note.

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:

• %System%\cmd.exe /c format {Afftected drive} /fs:ntfs /q /y
• %System%\cmd.exe /c del %User Profile%\Documents\* /F /Q
• %System%\cmd.exe /c del %Desktop%\* /F /Q
• %System%\cmd.exe /c del %Application Data%\Microsoft\Windows\Recent\* /F /Q
• %System%\cmd.exe /c del %Favorites%\* /F /Q
• %System%\cmd.exe /c del %User Profile%\Music\* /F /Q
• %System%\cmd.exe /c del %User Profile%\Videos\* /F /Q
• %System%\cmd.exe /c del %System Root%\Users\Public\Desktop\* /F /Q
• %System%\NOTEPAD.EXE %Desktop%\Warning.txt

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista, 7, and 8.. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista, 7, and 8.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, and 8.. %Favorites% is the current user's Favorites folder, which is usually C:\Documents and Settings\{user name}\Favorites on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Favorites on Windows Vista, 7, and 8.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other System Modifications

This Ransomware deletes files in the following folders:

• %Desktop%
• %User Profile%\Documents
• %User Profile%\Music
• %User Profile%\Videos
• %Favorites%
• %System Root%\Users\Public\Desktop
• %Application Data%\Microsoft\Windows\Recent
• {All drives except C:\}

(Note: %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Desktop on Windows Vista, 7, and 8.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista, 7, and 8.. %Favorites% is the current user's Favorites folder, which is usually C:\Documents and Settings\{user name}\Favorites on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\Favorites on Windows Vista, 7, and 8.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, and 8.)

Other Details

This Ransomware connects to the following website to send and receive information:

• {BLOCKED}.{BLOCKED}7.xyz

Ransomware Routine

This Ransomware drops the following file(s) as ransom note:

It leaves text files that serve as ransom notes containing the following text: