Trojans are malicious applications that pose themselves as legitimate software in order to trick users to install them. Once on the victim's machine, it may run any number of malicious process to steal vital information or inflict damage to other software.
Kavsvc creates random 6 character filenames and usually hides these in the windows\system32\ directory.
pqnelhleyy ac1f1c33 5b51529b
Qoologic is a downloader program designed to retrieve and install additional files, when run.
Kavsvc is a startup process used by Kaspersky Anti-Virus.