Well I noticed in passing another topic in the German forum about Kelihos-S also, but this was for three different files (but I don't know if that one was also a custom/memory scan).
So I think there is need for a reanalysis of this signature at the least, though how to submit that on a memory scan detection is beyond me. I guess it could be emailed as a false positive in the subject, without a file attachment, giving details of the detection and a link to the topic in the email body.