RUNDLL32 .EXE

File Behavior

RUNDLL32 .EXE has been seen to perform the following behavior:

• Writes to another Process's Virtual Memory (Process Hijacking)
• This Process Deletes Other Processes From Disk
• This process creates other processes on disk
• Executes a Process
• Adds a Registry Key (RUN) to auto start Programs on system start up
• Executes Processes stored in Temporary Folders
• Hooks the WININET.DLL function allowing it to read or copy Http and Https web page content and session information
• Registers a Dynamic Link Library File
• Creates new folders on the system
• Creates, modifies or schedules batch jobs
• Injects code into other processes
• The Process is packed and/or encrypted using a software packing process
• Found on infected systems and resists interrogation by security products
• Uses low level functions to hide itself from the user and from system/security processes

RUNDLL32 .EXE has been the subject of the following behavior:

• Created as a process on disk
• Executed as a Process
• Has code inserted into its Virtual Memory space by other programs
• Terminated as a Process
• Registered as a Dynamic Link Library File
• Deleted as a process from disk
• Added as a Registry auto start to load Program on Boot up