Category: Malware
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Polish “Powiadomienie” JS Campaign — Credential Theft via FTP Exfiltration
A 3.6 MB JavaScript file, hardened with `javascript-obfuscator` — rotated string arrays, index decoders, 53 dead dispatcher functions, a catastrophic backtracking regex trap — ends with a plaintext FTP upload of your…
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The 1.7 MB CAPTCHA — How a Fake Human Verification Check Delivered Two RATs
A fake CAPTCHA — 1.7 MB of React 19 served from a .top domain — tricks a visitor into pressing Win+Rand pasting PowerShell. No browser sandbox escape needed. No exploit. Just social…
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Hunting Lazy OPSEC: Spotting Default C2 Certificates with DuckDB and Zeek
Threat actors love to reuse tools, and sometimes, they get lazy. Case in point: AsyncRAT and its notorious fork, DcRAT. These remote access trojans often ship with default, self-signed certificates. If the…
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Beyond the Grep: Hunting Malware with Zeek and DuckDB SQL
Hunting through raw Zeek logs just got a massive upgrade. If you’ve spent years in the SOC, you’ve likely built up a library of complex awk chains and grep commands to parse…
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How I Used Gemini To Fix My Terrible Zeek Documentation
I built a Zeek-based Amadey malware detector… and then absolutely did NOT document it. https://github.com/keithjjones/zeek-amadey-detector So instead of fixing my own mess, I made Gemini do it. In this video: If your…
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Keith Jones’ Journey As Expert Digital Forensics Expert To AI Malware Researcher
Had a great time as a guest on the Security Unfiltered Podcast, talking about work-life balance in cybersecurity—especially for parents. We covered how remote work has shifted expectations, the challenge of growing…
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Detect STRRAT Malware With Zeek And Suricata
Join me in learning how to detect the STRRAT malware family with Zeek and Suricata. Corelight Blog: https://corelight.com/blog/newsroom/news/strrat-malware Source Code: https://github.com/corelight/zeek-strrat-detector 00:00:10:18 – 00:00:37:17Dr. Keith JonesHey, welcome. We’re going to talk about…
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Detect Gozi Banking Malware With Zeek!
Join the Old Grizzled FBI Agent to hear how to detect the Gozi Banking Malware Family with Zeek! Corelight Blog: https://corelight.com/blog/gozi-banking-malware Transcript: 00:00:10:47 – 00:00:41:11Old Grizzled FBI AgentHi there. This is your…
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Detecting AsyncRAT Malware C2 With Zeek And Suricata
Please join the “Old Grizzled FBI Agent” to hear how you can detect the AsyncRAT malware family with Suricata and Zeek! Corelight blog: https://corelight.com/blog/newsroom/news/hunt-of-the-month-detecting-async-rat-malware Zeek: https://zeek.org/ Source code: https://github.com/corelight/zeek-asyncrat-detector Transcript: 00:00:00:10 –…
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Analyzing QBot/QakBot Malware With Zeek
In this short article I’ll outline some analysis I performed on the QBot/QakBot malware family with Zeek. I took a look at the following PCAPs from this family of malware, hoping to…