RANSOM_WALTRIX.BZA

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Arrival Details

This Trojan 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 Trojan drops the following files:

• {folders containing encrypted files}\de_crypt_readme.txt
• {folders containing encrypted files}\de_crypt_readme.html
• {folders containing encrypted files}\de_crypt_readme.bmp
• %Desktop%\de_crypt_readme.txt
• %Desktop%\de_crypt_readme.html
• %Desktop%\de_crypt_readme.bmp

(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 drops the following non-malicious files:

• %All Users Profile%\Application Data\{random file name}.dat

(Note: %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on 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.)

Other Details

This Trojan renames encrypted files using the following names:

• {original file name}.crypt

It does the following:

• possibly connects to a malicious website to send and receive information
• steals information