Troj/ConHook-C is a downloader Trojan which attempts to download and execute files from a remote URL without the user's knowledge.
The Trojan may create registry entries under the following keys:
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellExecuteHooks
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\
Browser.Helper.Objects\{8E13DDE1-E013-47ec-9C4C-27C2F78BDD26}