It’s amazing how we can find old scripts coming back to life for some obscure reasons. If today, Powershell or JavaScript (and its derivations) are very common languages used to perform malicious actions, PHP remains also a good candidate. One of my hunting rules is to search for reversed PHP commands using the strrev() function. A few days ago I found a PHP script on pastebin.com that contained the following functions:
Article Link: https://isc.sans.edu/diary/rss/25148