SXS.EXE

File Behavior

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

• The Process is packed and/or encrypted using a software packing process
• Adds a Registry Key (RUN) to auto start Programs on system start up
• Modifies Windows Security Policies to restrict/expand User Privileges on the machine
• This Process Deletes Other Processes From Disk
• Executes a Process
• This process creates other processes on disk
• The process hooks code into all running processes which could allow it to take control of the system or record keyboard input, mouse activity and screen contents
• Writes to another Process's Virtual Memory (Process Hijacking)
• Terminates Processes
• Can communicate with other computer systems using HTTP protocols
• Registers a Dynamic Link Library File
• Enables an In Process Object/Server - Common with DLL Injections
• Looks at the contents of the autoexec.bat file
• Reads email address and phone book details
• Opens browser pop ups
• Uses DNS to retrieve the IP address for web sites
• This Process Contains User Mode Rootkit Functionality and can hide itself from the running process list
• Found on infected systems and resists interrogation by security products
• Uses rootkit techniques to conceal its presence, interrogation or removal

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

• Deleted as a process from disk
• 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
• Copied to multiple locations on the system
• Registered as a Dynamic Link Library File
• Added as a Registry auto start to load Program on Boot up