Likely a text-based dump of compromised data (Logs/Credentials).

The content likely contains compromised username/password combinations for Facebook accounts.

for malware (e.g., using Windows Defender or reputable malware scanners).

Such files are frequently used to distribute information-stealing malware (e.g., Redline, Raccoon) that can steal browser cookies, saved passwords, and crypto wallets.

"WWW.LOGS.CASH" suggests this data was sold or traded on a dedicated malware-as-a-service (MaaS) platform designed for trading stolen credentials.

this file if it was received via email or downloaded from an untrusted source.

in Facebook settings to remove unauthorized devices.