F.EXE

File Behavior

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

• The Process is packed and/or encrypted using a software packing process
• Can make outbound communication to other computers, IM chat rooms and other services using IRC protocols
• Communicates with other computers using FTP connections
• This Process Disables Other Security Products
• Contains Exploit Code for the WEBDAV Exploit
• Contains DCOM Exploit Code
• Adds a Registry Key (RUN) to auto start Programs on system start up
• Creates a TCP port which listens and is available for communication initiated by other computers
• Can communicate with other computer systems using HTTP protocols
• This Process Deletes Other Processes From Disk
• Makes outbound connections to other computers using NETBIOSOUT protocols
• Registers a Dynamic Link Library File
• Can communicate with other computers using TCP protocols
• This process creates other processes on disk
• Writes to another Process's Virtual Memory (Process Hijacking)
• Adds products to the system registry
• Executes a Process
• Removes Scheduled Tasks from the Windows task queue
• Copies files
• Creates or uses a background service to access the Internet using HTTP protocols
• Injects code into other processes
• Performs DNS look ups to resolve URL IP addresses
• The Process is polymorphic and can change its structure
• Loads and Executes a System Driver File
• 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

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

• Created as a new Background Service on the machine
• Added as a Registry auto start to load Program on Boot up
• Executed as a Process
• Created as a process on disk
• Deleted as a process from disk
• Victim of a Heap Based Buffer Overflow Exploit
• Executed from Temporary Folders
• Copied to multiple locations on the system
• Has code inserted into its Virtual Memory space by other programs
• Terminated as a Process
• Executed by Internet Explorer
• Downloaded from covert web sites without the user knowing
• This program is often downloaded from the web