Ransom.Win32.MONGOLOCK.THOAODAI

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

It connects to certain websites to send and receive information.

Other System Modifications

This Ransomware deletes files in the following folders:

• %User Profile%\Documents
• %Desktop%
• %Application Data%\Microsoft\Windows\Recent
• %Favorites%
• %User Profile%\Music
• %User Profile%\Videos
• %Public%\Desktop
• {All drives, except drive C}

(Note: %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.. %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.)

Other Details

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

• https://s.{BLOCKED}7.xyz/u3/w

It does the following:

• It formats all drives, except drive C, using the following command:
  cmd.exe /c format {Drive Letter}: /fs:ntfs /q /y

Ransomware Routine

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

• {Directory of Deleted Files}\Warning.txt