A "bootstrap" file used to sync a wallet quickly without downloading years of data. Wallet Backups: Encrypted copies of private keys.
Below is a blog post designed for a tech or crypto-enthusiast audience explaining what this file is and how to handle it. .StealthCoin.7z.001
Use an antivirus to scan the extracted contents, especially if there are .exe or .bat files inside. A "bootstrap" file used to sync a wallet