RANSOM_WADHRAMA.WILA

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 enables its automatic execution at every system startup by dropping copies of itself into the Windows Common Startup folder.

It is capable of encrypting files in the affected system.

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%\{malware file name}.exe

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Autostart Technique

This Ransomware enables its automatic execution at every system startup by dropping the following copies of itself into the Windows Common Startup folder:

• %All Users Profile%\Microsoft\Windows\Start Menu\Programs\Startup\{malware file name}.exe
• %User Startup%\{malware file name}.exe

(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.. %User Startup% is the current user's Startup folder, which is usually C:\Documents and Settings\{user}\Start Menu\Programs\Startup on Windows 2000 and XP, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup on Windows Vista, 7, and 8.)

It modifies the following registry entries to ensure it automatic execution at every system startup:

HKLM\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{malware file name}.exe = {malware file path}

Other Details

This Ransomware is capable of encrypting files in the affected system.

Ransomware Routine

This Ransomware appends the following extension to the file name of the encrypted files:

• .id-{8 Alpha Numeric Characters}.[decrypthelp@{BLOCKED}q.com].java