RANSOM_SPORA.YYAAH

This Ransomware arrives via removable drives. It arrives by accessing affected shared networks. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It drops copies of itself in all removable and physical drives found in the system. It propagates via shared networks and drops copies of itself into available networks.

It is capable of encrypting files in the affected system.

Arrival Details

This Ransomware arrives via removable drives.

It arrives by accessing affected shared networks.

It 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:

• {drive letter}:\{random filename}.exe - atrribute set to Hidden
• %Desktop%\{random filename}.exe - atrribute set to Hidden
• %User Temp%\{random filename}.exe

(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 Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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.)

Propagation

This Ransomware drops copies of itself in all removable and physical drives found in the system.

It propagates via shared networks and drops copies of itself into available networks.

Dropping Routine

This Ransomware drops the following files:

• %Application Data%\{random numbers}
• %Application Data%\{Unique ID}.html
• {drive letter}:\{Unique ID}.html
• %User Profile%\{Unique ID}.html
• %Application Data%\Microsoft\Windows\Templates\{Unique ID}.html
• %Desktop%\{Unique ID}.html
• %User Profile%\Favorites\{Unique ID}.html
• %Application Data%\Microsoft\Windows\Recent\{Unique ID}.html
• %User Startup%\{Unique ID}.html
• {drive Letter}:\{Shortcut file using the original folder name}
  The target path of this shortcut(LNK) is set to:
  • %System%\cmd.exe /c start explorer.exe "{original folder name}" & type "{malware copy with random filename}.exe" > "%temp%\{malware copy with random filename}.exe" && "%temp%\{malware copy with random filename}.exe"
  
  

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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 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.. %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 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.)

Other Details

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