I have no doubt that the source of that file came from "out-of-band." Maybe even an anonymous shell access. The user came in as "nobody" but still was able to get to that file location and to put something there ... and that also means, perhaps to replace something else there. If file and directory permissions would have prevented access from "nobody," then immediately you know that someone was covering their tracks.

In reply to Re^3: Phishing question by Anonymous Monk
in thread Phishing question by Anonymous Monk

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