The Practical Malware Analysis labs can be downloaded using the link below.
The lab binaries contain malicious code and you should not install or run these programs without first setting up a safe environment.
The labs are targeted for the Microsoft Windows XP operating system. Many of the labs work on newer versions of Windows, but some of them will not. The labs are designed to mimic realistic malware. Some of them are well-written code that runs reliable and some of them (just like real malware) are poorly written code that may crash, contain memory leaks, or otherwise behave unexpectedly.
NOTE: Some people had trouble downloading the labs because they are blocked by their security software. The following link is for an encrypted 7-zip file containing the labs. The password “malware”.