NTOS.EXE

File Behavior

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

• 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
• Executes a Process
• Injects code into other processes
• Creates new folders in the file system
• Creates a new Background Service on the machine
• Looks at the contents of the autoexec.bat file
• Drops known malicious software during execution
• Reads email address and phone book details
• Uses functions common to keyboard loggers, screen or form grabbers, and information stealers
• This Process Deletes Other Processes From Disk
• Writes to another Process's Virtual Memory (Process Hijacking)
• Copies files
• Creates new folders on the system
• Injects code into other processes
• Disables the built in Windows File Protection System
• This process creates other processes on disk
• Associated with, or similar to the ZEUS Internet and Online Banking Trojan
• Performs DNS look ups to resolve URL IP addresses

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

• Copied to multiple locations on the system
• Executed as a Process
• Created as a process on disk
• Deleted as a process from disk
• Added as a Registry auto start to load Program on Boot up
• Has code inserted into its Virtual Memory space by other programs
• Created as a new Background Service on the machine