WINLOG.EXE

File Behavior

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

• The Process is packed and/or encrypted using a software packing process
• Uses DNS to retrieve the IP address for web sites
• This Process is a file infector which modifies program files to include a copy of the infection
• This process creates other processes on disk
• Drops known malicious software during execution
• Reads email address and phone book details
• Uses backdoor interfaces to certain security applications
• Found on infected systems and resists interrogation by security products
• Writes to another Process's Virtual Memory (Process Hijacking)
• Executes a Process
• This Process Deletes Other Processes From Disk
• Adds a Registry Key (RUN) to auto start Programs on system start up
• Injects code into other processes
• Registers a Dynamic Link Library File
• Copies files
• Performs DNS look ups to resolve URL IP addresses
• Uses low level raw disk access which could bypass security applications and checks
• Looks at the contents of the autoexec.bat file
• Includes file creation code which could be used to test for interception by security products
• Can communicate with other computer systems using HTTP protocols
• Hooks the WININET.DLL function allowing it to read or copy Http and Https web page content and session information
• The Process is polymorphic and can change its structure
• Enables the system to use a Communications Proxy Server
• Checks for the use of debuggers
• Uses your PC to connect to Chat rooms

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

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