Ransom.Win64.ALBABAT.THLAABC

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 encrypts files found in specific folders. It drops files as ransom note. It avoids encrypting files with the following file extensions.

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:

• %Application Data%\Protect\S-3-5-25-0067212291-1140412766-535520311-1000\23aa4cc77f591dfc237480bbd95f6ba_84bd4d53-ac30-4946-a8d6-0787bbe453
• %User Profile%\Albabat\Albabat.log
• %User Profile%\Albabat\Albabat.ekey
• %User Profile%\Albabat\www\banner.jpg
• %User Profile%\Albabat\www\faq.html
• %User Profile%\Albabat\www\style.css
• %User Profile%\Albabat\www\script.js
• %Desktop%\Albabat.lnk → shortcut to open the ransom note

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %Desktop% is the current user's desktop, which is usually C:\Documents and Settings\{User Name}\Desktop on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\Desktop on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

It creates the following folders:

• %Application Data%\Protect\S-3-5-25-0067212291-1140412766-535520311-1000
• %User Profile%\Albabat
• %User Profile%\Albabat\www

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

Other System Modifications

This Ransomware changes the desktop wallpaper by modifying the following registry entries:

HKEY_CURRENT_USER\Control Panel\Desktop
Wallpaper = %User Profile%\Albabat\wallpaper_albabat.jpg

It sets the system's desktop wallpaper to the following image:

• %User Profile%\Albabat\wallpaper_albabat.jpg
  

Other Details

This Ransomware does the following:

• It displays a fake error message box and will proceed to its malicious routine once the window is closed:
  
• It moves the initially executed sample to the Application Data folder:
  • %Application Data%\{Malware Name}.exe

Ransomware Routine

This Ransomware encrypts files found in the following folders:

• %User Profile%\Pictures
• %User Profile%\Imágenes
• %User Profile%\Imagens
• %User Profile%\Documents
• %User Profile%\Documentos
• %User Profile%\OneDrive\Pictures
• %User Profile%\OneDrive\Images
• %User Profile%\OneDrive\Imágenes
• %User Profile%\OneDrive\Imagens
• %User Profile%\OneDrive\Área de Trabalho
• %User Profile%\OneDrive\Área de trabajo
• %User Profile%\OneDrive\Desktop
• %User Profile%\OneDrive\Documents
• %User Profile%\OneDrive\Documentos
• %User Profile%\OneDrive\Contacts
• %User Profile%\OneDrive\Contactos
• %User Profile%\OneDrive\Cofre Pessoal
• %User Profile%\OneDrive\Personal Safe
• D:\Pictures
• D:\Images
• D:\Imágenes
• D:\Imagens
• D:\Documents
• D:\Documentos
• %Public%\Documents
• %Public%\Pictures
• %User Profile%\CLionProjects
• %User Profile%\IntelliJProjects
• %User Profile%\RustroverProjects
• %User Profile%\Desktop
• %User Profile%\OneDrive
• %User Profile%
• A:\
• B:\
• E:\
• F:\
• G:\
• H:\
• I:\
• X:\
• D:\
• %User Profile%\Downloads
• D:\Downloads

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %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.)

It avoids encrypting files with the following strings in their file name:

• NTUSER.DAT
• Albabat.ekey
• Albabat.key
• wallpaper_albabat.jpg
• README.txt
• FAQ.txt
• privkey.pem
• Thumbs.db
• .DS_Store

It avoids encrypting files found in the following folders:

• Searches
• AppData
• System Volume Information
• steamapps
• ansel
• tmp
• node_modules
• cache
• tkinter
• tcl
• vendor
• target
• venv
• env
• Mozilla
• Chrome
• pypoetry
• vimfiles
• viminfosite-packages
• scoop
• go

It drops the following file(s) as ransom note:

• %User Profile%\Albabat\README.html
  

It avoids encrypting files with the following file extensions:

• .abbt
• .pyd
• ._pth
• .CHK
• .pickle
• .url
• .tmp
• .dat
• .exe
• .lnk
• .win
• .bin
• .cab
• .inf
• .lib
• .tcl
• .cat
• .so
• .msi
• .vpk
• .vc
• .cur
• .ini
• .bik
• .sfx
• .xnb
• .ttf
• .otf
• .woff
• .woff2
• .vfont
• .resource
• .N2PK
• .log
• .pkg
• .desktop
• .dll
• .pkr
• .arc
• .sig
• .bk2
• .arz
• .swf
• .qt
• .wma
• .mp2
• .vdf
• .pdb
• .nfo
• .whl