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You need to be more specific. You've given us an approximate time but what was the date and what is the image scale? For that size it must be blown up quite a bit. How many degrees was it roughly from Venus? If it is in the last week and you went from Jupiter through Venus then onwards, it's probably Mercury. Mars is now on the Jupiter side of Venus. Did you notice the Moon nearby?
At that time of morning there's likely to be a lot of air movement with the rising Sun. The disk is roughly circular. I'm going for bad seeing and/or an out of focus Mercury with the "smooth" bright side facing the Sun. Mercury would be very low in the sky. Was this the case?
I'm guessing the irregularities, including "craters", are due to poorer seeing and/or noise.
Regards, Rob.
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