CALCOLA.EXE

File Behavior

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

• Writes to another Process's Virtual Memory (Process Hijacking)
• Adds a Registry Key (RUN) to auto start Programs on system start up
• Modifies System Runtime Policies to limit system usability
• Creates a new Background Service on the machine
• Automatically changes your firewall settings to allow itself or other programs to communicate over the internet
• This Process Deletes Other Processes From Disk
• Executes a Process
• This process creates other processes on disk
• Creates new folders on the system
• Copies files
• Injects code into other processes
• The Process is packed and/or encrypted using a software packing process
• Can communicate with other computer systems using HTTP protocols
• Performs DNS look ups to resolve URL IP addresses
• 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
• Registers a Dynamic Link Library File
• Checks for the use of debuggers
• Opens browser pop ups
• Uses DNS to retrieve the IP address for web sites
• Uses your PC to connect to Chat rooms
• Creates system tray popups, messages, errors and security warnings
• Downloads program file(s) and other content from the web
• Modifies fixed, removable or USB drives using autorun to execute or spread infection
• Reads email address and phone book details
• Looks at the contents of the autoexec.bat file
• Visits web sites on your PC without you knowing
• Includes file creation code which could be used to test for interception by security products
• Found on infected systems and resists interrogation by security products

CALCOLA.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
• Added as a Registry auto start to load Program on Boot up
• Copied to multiple locations on the system
• Terminated as a Process
• Deleted as a process from disk
• Executed by Internet Explorer
• Created by processes which appear to be checking for interception by security products