Troj/AdClick-AC is a popup and downloader Trojan for the Windows platform.
Periodically, Troj/AdClick-AC will create popup adverts using Internet Explorer.
The Trojan may also attempt to download updates of itself.
Troj/AdClick-AC installs itself as a Browser Help Object (BHO).
In order to run automatically, Troj/AdClick-AC will set the following registry entries:
HKCR\CLSID\(54645654-2225-4455-44A1-9F4543D34545)
(Default)
System Check Application
HKCR\CLSID\(54645654-2225-4455-44A1-9F4543D34545)\InProcServer32
(Default)
<path to Trojan DLL>
HKLM\SOFTWARE\Microsoft\Windows\
CurrentVersion\ShellServiceObjectDelayLoad
SystemCheck2
(54645654-2225-4455-44A1-9F4543D34545)