http://bugs.winehq.org/show_bug.cgi?id=9993
--- Comment #2 from Dmitry Timoshkov dmitry@codeweavers.com 2007-10-11 10:27:34 --- Google can't find anything for 04 52 e3 0b except a similar byte sequence... in the bug 4382.
Also native oleaut32.dll from XP does have that byte sequence in 1 place, so this probably suggests that it does know this format.