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Hacked PC - random sounds playing (sh.itjust.works)

submitted 5 days ago by LOLseas@sh.itjust.works to c/linux@programming.dev

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My fellow penguins,

I have been pwned. What started off as weeks of smiling everytime I heard a 7-10s soundbyte of Karma Factory's "Where Is My Mind" has now devolved into hearing dashes and dots (Morse Code) and my all-time favorite, a South Park S13: Dead Celebrities soundbyte of Ike's Dad saying, "Ike, we are sick of you talking about ghosts!"

It's getting old now.

I feel like these sounds should be grepable in some log somewhere, but I'm a neophyte to this. I've done a clean (secure wipe >> reinstall) already, the sounds returned not even a day later.

Distro is Debian Bookworm. So how do I find these soundbytes? And how do I overcome this persistence? UFW is blocking inbound connection attempts everyday, but the attacker already established a foothold.

Thank you in advance. LOLseas

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[–] frongt@lemmy.zip 17 points 4 days ago

Agreed. Persisting through a wipe and reinstall is extremely unlikely. That kind of persistence isn't used by people doing it for the lulz.

I'd definitely check for devices on the audio cable, suspicious USB devices, things like that. And we need more info about trying to isolate and identify the actual source of the sound itself (speakers, headphones, etc.)

Like you mentioned, if it happens even when the PC is off, then I'd look for some kind of annoyatron, not the PC.