A multi-component Trojan, clever as can be, was its target, as we shall see. The Trojan: “Winlogon, Winlogon where art thou? The infected user: “Oh, to have a computer free of pain” The end: “And so ended a tale of woe, with Troj/WLHack-A and Troj-C no more. No doubt further variants we shall find, but not yet can we have peace of mind.”]
Source: https://nakedsecurity.sophos.com/2007/05/11/logon-to-malware/