RANSOM_HIDDENTEARBANCO.A

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 creates folders where it drops its files.

It connects to certain websites to send and receive information.

It encrypts files with specific file extensions. It encrypts files found in specific folders. 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 drops the following copies of itself into the affected system:

• %System Root%\{User Name}\Rand123\local.exe

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other System Modifications

This Ransomware sets the system's desktop wallpaper to the following image:

Download Routine

This Ransomware connects to the following URL(s) to download its component file(s):

• https://{BLOCKED}r.{BLOCKED}m/nPcEpO8.png

It saves the files it downloads using the following names:

• %System Root%\{User Name}\ransom.jpg -> used as wallpaper

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

Other Details

This Ransomware connects to the following URL(s) to check for an Internet connection:

• https://www.google.com

It connects to the following website to send and receive information:

• https://{BLOCKED}09153828.{BLOCKED}hostapp.com/write.php

Ransomware Routine

This Ransomware encrypts files with the following extensions:

• .txt
• .jar
• .exe
• .dat
• .contact
• .settings
• .doc
• .docx
• .xls
• .xlsx
• .ppt
• .pptx
• .odt
• .jpg
• .png
• .gif
• .csv
• .py
• .sql
• .mdb
• .sln
• .php
• .asp
• .aspx
• .html
• .htm
• .xml
• .psd
• .ai
• .pdf
• .dll
• .c
• .cs
• .mp3
• .mp4
• .wma
• .wmv
• .f3d
• .dwg
• .cpp
• .zip
• .rar
• .mov
• .rtf
• .bmp
• .mkv
• .avi
• .apk
• .lnk
• .iso
• .7-zip
• .ace
• .arj
• .bz2
• .cab
• .gzip
• .lzh
• .tar
• .uue
• .xz
• .z
• .001
• .mpeg
• .mp3
• .mpg
• .core
• .crproj
• .pdb
• .ico
• .pas
• .db
• .torrent

It encrypts files found in the following folders:

• %Desktop%
• %User Profile%\Links
• %User Profile%\Contacts
• %User Profile%\Desktop
• %User Profile%\Documents
• %User Profile%\Downloads
• %User Profile%\Pictures
• %User Profile%\Music
• %User Profile%\OneDrive
• %User Profile%\Saved Games
• %User Profile%\Favorites
• %User Profile%\Searches
• %User Profile%\Videos

(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %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 and 7.)

It appends the following extension to the file name of the encrypted files:

• .locky

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

• %Desktop%\Leeme_Nota_de_Rescate.txt

(Note: %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

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

• Esta computadora ha sido hackeada
  Tu informacion personal ha sido encriptada. Envianos 10 dólares por medio de PAYZA a la siguiente dirección de pago: {BLOCKED}h.{BLOCKED}nlinea@zoho.com , y al mismo correo enviaras un capture de la transacción.
  Después de eso, te enviaremos los pasos a seguir para recuperar tus preciados archivos.
  Un paso en falso y perderás todos tus archivos, no te equivoques, Jhas