In the last few days I've been doing some scanning of malware with Phrozen's excellent VirusTotal Uploader. Files get scanned by both TrendMicro and TrendMicro HouseCall. One thing that has become very apparent, is the detection rate for TrendMicro's HouseCall is a lot better than the detection rates for TrendMicro. I am wondering why HouseCall has such better detection rates. For the samples I've tested, the detection rate of HouseCall has been excellent. However, quite a few threats have been detected as "generic trojans," rather than being actually detected by name.