不管病毒采用哪种方式，所有的病毒都具有如下一些共同的基本特性：

1.搜寻一个文件进行感染，这文件可以是可执行文件，源代码文件，或是什么都行（若没找到，则跳转到第三步）

2.把病毒本体写入此文件

3.检查有没可满足的触发条件，若有，这病毒激活

4.返回宿主程序或是停止运行并返回到DOS.

-No matter which way the virus used, all viruses have the following basic characteristics common: 1. Search for a file infection, this document can be executable files, source code files, or anything (if not found, then Jump to the third step) 2. the virus into the body of this document 3. check did not meet the trigger conditions, if any, of this virus to activate 4. back to the host program to run or stop and return to DOS.