Note — this is only for highly experienced users. Don’t play with this thing unless you really know what you are doing.
Although the security community has relied on the “Eicar Antivirus Test File” for years, the complex advances in malware requires a more modern and thorough threat simulation. To this end the “DFK Threat Simulator” was created. Bundling a declawed collection of dropper, rootkit, virus, trojan, spyware, keylogger, leaktest, and alternate data stream technology, the DFK Threat Simulator is a serious representation of the modern dangers facing computer users today. A full description of this simulator, including screenshots and file download, can be found here.