Dio9sysFeb 24

It's been extremely hard to keep this one under wraps.

I just published a new blog post, where one weird string that looks like a cookie value turned out to be a whole cryptostealer and database wiping operation.

https://www.labs.greynoise.io/grimoire/2026-02-24-whats-that-string/

I spent some late nights on this one, and am a little bit ridiculously proud of the work I did.

What’s That String? That Time a Weird String Revealed a Whole Operation – GreyNoise Labs

One weird payload turned out to be a loose thread on an active hacking operation.

GreyNoise Labs
Show threadDavid Schuetz ** looking for work **

@Dio9sys Nice! A reversed B64 string is like a big neon sign saying “WARNING — INESCAPABLE SIDE QUEST”.

Great work exploring the rabbit hole!

Feb 25 at 2:18pmWeb
Show threadDio9sysFeb 25
@darthnull Thanks! This one was a lot of fun