TSPY_DYRE.JSV

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

It deletes itself after execution.

Arrival Details

This spyware 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 spyware drops the following copies of itself into the affected system:

• %Windows%\{random filename}.exe (for Windows XP and below)
• %AppDataLocal%\{random filenam}.exe (for Windows Vista and above)

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

Autostart Technique

This spyware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\ControlSet001\Services\
googleupdate
ImagePath = "%Windows%\{random filename}.exe" (for Windows XP and below)

HKEY_LOCAL_MACHINE\ControlSet001\Services\
googleupdate
DisplayName = "Google Update Service" (for Windows XP and below)

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
(Default) = "%AppDataLocal%\{random filenam}.exe" (for Windows Vista and above)

Other Details

This spyware connects to the following possibly malicious URL:

• http://{BLOCKED}1.voiceeclipse.net
• http://{BLOCKED}n.ipshka.com

It drops the following file(s)/component(s):

• %System%\config\systemprofile\Application Data\{random filename}.dat (for Windows XP and below)
• %AppDataLocal%\{random filename}.dat (for Windows Vista and above)

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %AppDataLocal% is the Application Data folder found in Local Settings, where it is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local 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.)

It deletes itself after execution.