And what is your antivirus program?
Most of them detect it as a miner.
https://www.virustotal.com/de/file/05ff34daded3e249a76d61b18df79ef2814adb8393c526cd54a8bfe446ed34c6/analysis/
But keeping an eye on
VirTool.Win32.Obfuscator.hg!b1 (v)
Artemis!0F31AA6B04EAbfuscator.hg!b1 (v) probably false positive https://bitcointalksearch.org/topic/mcafee-vs-bitcoin-mining-187263
Antivirus which detects miner as virus is 360 Total Security
It's already in the list.
Qihoo-360 Win32/Virus.RiskTool.46f
If you search Virus.RiskTool you will see a lot of miners are flagged, because there were situations where someone downloaded a program containing a hidden miner that sent the rewards to the attacker's address. Other anti-virus companies therefore call miners "potentially unwanted", "not-a-virus" or indeed "RiskTool", just to warn the client that a miner was detected.