If you are talking about the Claymore Miner v11.9 it does not need a password, are you sure you downloaded it from one the official sites in the OP https://bitcointalksearch.org/topic/claymores-dual-ethereum-amdnvidia-gpu-miner-v150-windowslinux-1433925
Try extracting it with 7-Zip https://www.7-zip.org/ (it's free), I have found that some zip files won't extract with WinZip but will with 7-Zip.