You can upload the file to VirusTotal.com , which scans the file with over 70 different antivirus engines. 4. Use Secure Extraction Tools
To help me narrow down what you are looking for, could you tell me: DEFCON 7.rar
Right-click the file and select "Scan with Microsoft Defender." You can upload the file to VirusTotal
You may also try Logicly in your browser. No download required.