DEFENDER.EXE

File Behavior

DEFENDER.EXE has been seen to perform the following behavior:

• The Process is packed and/or encrypted using a software packing process
• Adds products to the system registry
• Terminates Processes
• Adds a Registry Key (RUN) to auto start Programs on system start up
• Adds a Registry Key (RUNONCE) to auto start Programs on system start up
• This process creates other processes on disk
• Can communicate with other computer systems using HTTP protocols
• Hooks the WININET.DLL function allowing it to read or copy Http and Https web page content and session information
• Executes a Process
• Registers a Dynamic Link Library File
• Injects code into other processes
• Performs DNS look ups to resolve URL IP addresses
• This Process Deletes Other Processes From Disk
• Found on infected systems and resists interrogation by security products
• Writes to another Process's Virtual Memory (Process Hijacking)

DEFENDER.EXE has been the subject of the following behavior:

• Created as a process on disk
• Executed from Temporary Folders
• Added as a Registry auto start to load Program on Boot up
• Executed as a Process
• Registered as a Dynamic Link Library File
• Added as a Registry Key (RUNONCE) to auto start Programs on system start up
• Executed by Internet Explorer
• Deleted as a process from disk
• Has code inserted into its Virtual Memory space by other programs
• Terminated as a Process