I'm not sure if this is the correct forum to report this in, but the enderal launcher.exe found in my ~\steamapps\common\skyrim\ shows up as malware when Norton Power Eraser is run on the same system. The file shows up as a shortcut, marked bad, with the suggestion to remove.
The reason I discovered this was that my cable provider, Time Warner, sent a warning email about potential botnet activity on my network and urged me to check connected devices with one or more of their choice malware scanners. No other "bad" software was found with it or with McAfee Stinger or with Windows Defender (the latter two not even identifying the launcher as a problem file). I'm sure enderal launcher is fine, but heads up to the developers or others who might have run into this problem.