If you use an IP version of QQ such as Coral, you don't need to worry about viruses, because that is the IP detection function of Coral QQ, which actively detects the IP address of the other party by sending pictures and the like, and this detection can only be seen by the other party, but you can't see it yourself, and the other party only sees a red cross, not a complete picture.

If you are not using the QQ version with IP, or QQ will send pictures to each other from time to time when you are chatting, and both of you can see this picture, then there are two possibilities:

First, some of the text content of your chat coincides with the shortcut keys of those custom expressions in your QQ, so that those custom expressions are called out directly. Of course, a prerequisite for this situation is that these pictures are your customized QQ expressions.

Second, if it does not meet the first situation, it will be in trouble. It's very likely that you won the "QQ Tail" or "QQ Bai Gujing" (generally sending a virus file with an exe extension, even pretending to be a picture or video format, no matter whether you click "accept" or "reject", you will be caught).

In this case, as long as you update the virus database of anti-virus software on your computer to the latest, you can generally kill it.