This is what I can say,
Rotator.Adjuggler is a malicious tracking cookie that installs on your computer when you visit certain websites. These are mostly advertisement websites or malicious sites (e.g., Keygen and Warez sites). It secretly installs using pop-up advertisements on these sites and makes its way to your system folders. It may also secretly install through files downloaded and installed from the Internet. Once it has been installed, it launches automatically at computer and browser startup.
So, it is a cookie installed by the website you have visited.
As a precaution, you can deny installing any 3rd party cookie in Chrome.
Go to options, under the hood tab, content settings and check mark block all thrid party cookies without any exceptions. This way, chrome will deny any 3p cookie installing. Once done, click close and clear all browsing data.
Run a full virus scan and keep your computer safe.