this post was submitted on 22 Jul 2023
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Once you suspect a device is infected the only good option is the nuclear option. Anything else will not be guaranteed to 100% remove it, or really, anywhere near close to that, or even detect everything wrong in the first place or after attempted removal. And with a month long period between attacks that is a long time to wait and see to see if any other option might work.
Absolutely. Use an efficient disk imager that can take incremental snapshots and you can keep backups for months or years without needing a ton of storage.
True, but I would confirm a device is compromised before nuking the OS, not just do it willy-nilly because maybe it could be. A better way to phrase what OP is asking is: what are some ways to troubleshoot this without making a ton of potentially unnecessary work for myself?
...to which I would say, run a
netstaton any systems that you can, check those IP's against WHOIS and/or traceroute. Anything that traces to Eastern Europe, Russia, China, most of SEA is a red flag. Dig a little deeper with Wireshark or Glasswire to inspect some actual packets for suspicious content. I think there's a network logger that can trace the process using a given connection, but the name eludes me).Find your smoking gun, then torch the OS.