It's based on the ADMtek 8515 chipset.
I installed the Pegasus driver, but all that I got extra was that it finally found it in the System Profiler. So I had to modify the Info.plist file in USBPegasusEthernet.kext/contents/
I looked into the file and found my chipset, but I found that although the Product id matched my chipset's Product id (checked it in the System Profiler), the Vendor id didn't. So I modified the Vendor id to match mine. This is how the device's section looks like now:
<key>ADMtek ADM8515 Pegasus II USB Ethernet</key>
Currently writing from my Hackintosh =D