Category: Detection
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Waski Downloader — Cloudflare Payload, Silent Callbacks
A 19 KB C++ trojan downloader drops a child process, wraps its payload fetch in a valid Cloudflare-fronted TLS session, and produces exactly zero certificate errors in 150 seconds of traffic. Then…
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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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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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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…
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A Gozi Banking Malware Detector – Zeek Roulette #3
I had talked about Gozi malware in our eCrimeBytes podcast here: Last Man From Gozi Banking Malware Group Sentenced To Three Years – eCrimeBytes Nibble #51 In my technical real life job…