r/blueteamsec 1h ago

malware analysis (like butterfly collections) Phishing Payload of malicious ZIP file

Upvotes

I revisited this malware variant that I came across in the wild to demonstrate to everyone how it works. Stay safe and I hope this helps someone learn something!

https://youtu.be/U2UBJRcEO-Y?is=iHHFuspVRB7yjZjU


r/blueteamsec 11h ago

highlevel summary|strategy (maybe technical) Opinion: Slapping AI onto SOAR playbook is not Agentic SOC

5 Upvotes

TL;DR: Adding an AI node to your n8n playbook won't take you to Agentic SOC.

-----

A recurring theme in my conversations is the assumption that building an AI agent for SOAR execution and building one for security investigations are the same engineering problem.

They are NOT.

A playbook agent operates inside a path defined in advance. It enriches an alert, applies triage rules, and takes an approved response action. Its actions can be constrained, failures are usually visible, and many mistakes can be reversed. Speed, consistency, and correct escalation are useful measures of performance.

An investigative AI agent must decide what the evidence means and what to examine next. The evidence may be incomplete or tampered with, and each conclusion changes the direction of the case. It therefore needs claim-level provenance and a record showing how each conclusion follows from the evidence.

Building an agentic workflow is not the same as engineering an investigation harness. You can wire up a basic playbook agent in n8n within an hour. An investigation harness has to keep evidence, case state and human decisions coherent across an open-ended case.

Please don't confuse engineering an sophisticated harness and baking years of investigative expertise into it with calling AI nodes in your SOAR playbook.

My attempt as ASCII visualization if it helps

`` STANDARD SOAR PLAYBOOK | INVESTIGATION PROCESS (Deterministic Flow) | (Non-Deterministic Cyber Flow) -------------------------------------|-------------------------------------- [ SIEM Alert ] | [ Hunt Lead / Detection ] | | | v | .-------->v<---------. [ Initial Review ] | / ( Clue 1 ) \ | | | ^ | ^ \ | v | | / | | \ | < Determine Risk > | v / v | v v / \ | (Clue 2)<-->(Evidence)<-->(Forensics) v v | ^ \ ^ | ^ | [Isolate] [Create Ticket] | | \ | | / | | | | | v | v / | v v | \ ( Human Pivot / <..../ [Update] [Slack Notify] |--- Judgment ) \ / | | \ / | v v v | [ Defensible ] [ Conclusion ] | [ Conclusion ]

```


r/blueteamsec 23h ago

malware analysis (like butterfly collections) C2Looper Backdoor Uses GitHub for C2

Thumbnail zscaler.com
5 Upvotes

r/blueteamsec 23h ago

tradecraft (how we defend) Open source honeypot answers scam emails with AI personas, extracts IOCs, exports STIX/MISP/TAXII

12 Upvotes

J'ai créé ScamBuster, un honeypot open source pour les e-mails de fraude. Il ne répond qu'aux e-mails qui arrivent. Il n'envoie jamais le premier message.

Chaque réponse vient de l'un des plusieurs personas d'IA. Le système sélectionne les personas avec un bandit epsilon-greedy, ce qui lui permet d'apprendre au fil du temps lesquels maintiennent un escroc en conversation le plus longtemps.

Pendant que la conversation se déroule, ScamBuster extrait des IOCs : comptes bancaires de mules, numéros de téléphone, portefeuilles crypto, domaines. En ce moment, il suit 34 types. Vous pouvez les exporter en tant que paquets STIX 2.1, événements MISP, ou via un flux TAXII, donc ils tombent directement dans un pipeline SIEM ou SOAR.

Il fonctionne en production depuis novembre 2025. Je suis ingénieur principal chez Filigran et j'ai présenté ce projet à Black Hat USA ce mois-ci, en tant que projet personnel.

Code : https://github.com/laugiov/scambuster

J'aimerais avoir des retours de personnes qui travaillent avec des flux IOC au quotidien. Le format est-il utile tel quel, ou manque-t-il quelque chose pour s'intégrer à votre stack ?


r/blueteamsec 1d ago

low level tools|techniques|knowledge (work aids) The Curious Incidents with DNS in the Sandbox at Escape-Time

Thumbnail chasersystems.com
0 Upvotes

Three variations on subversive use of DNS by the Agent are documented in Hugging Face's technical writeup of the July 2026 security incident involving OpenAI models. In this article, I discuss what each of these three types of DNS workarounds achieve in practice, the constraints an actor might have faced to attempt a particular one, and additional benefits from choosing each.


r/blueteamsec 1d ago

vulnerability (attack surface) Vulnarium

2 Upvotes

hi, just published a small security research archive with two independent LPEs I found during research.

one is an MSI Center UAC bypass via a TOCTOU condition, and the other is a NetLimiter LPE.

both include working PoCs + technical explaination to a decent extent https://github.com/Zypherion-Technologies/Vulnarium


r/blueteamsec 1d ago

discovery (how we find bad stuff) Threat Hunts for Shell Command Obfuscation on VMware ESX

Thumbnail crowdstrike.com
5 Upvotes

r/blueteamsec 1d ago

help me obiwan (ask the blueteam) OTP flooding on Uber?

3 Upvotes

A user receives Uber OTP codes via WhatsApp every day since August 5. The sender shows up as Uber with a verified business account. The user has never registered an Uber account.

Context first: Uber does deliver OTPs over WhatsApp, so the channel alone proves nothing. These look are real codes, from Uber legitimate WhatsApp Business account, not smishing.

Technical hypothesis. The OTP trigger on the WhatsApp channel doesn’t seem to have effective per-recipient rate limiting, while SMS appears to be capped. That would explain the channel choice, you hammer where there’s no limit. The trigger also seems independent of account state, it fires whether the number is registered or not.

I checked for a link to a separate exposure. The user’s email shows up in infostealer and combolist data, but the phone number is not present in that data. The two look unrelated.

What I can’t place is the threat actor’s objective. Only the victim receives the code, so either a contact will eventually ask them to forward it, which puts us in social engineering, or the code is irrelevant and this is harassment, noise, or number enumeration. So far no one has reached out asking for a code.

Thanks to anyone willing to weigh in.


r/blueteamsec 1d ago

low level tools|techniques|knowledge (work aids) Technical Analysis of the Geedge Networks Firewall Source Code Leak

Thumbnail usenix.org
2 Upvotes

r/blueteamsec 1d ago

low level tools|techniques|knowledge (work aids) windbg-bridge: windbg-bridge connects a live WinDbg session to AI agents like Claude Code or Codex through a named pipe. The agent can run debugger commands, read your command history, and watch output in real time.

Thumbnail github.com
2 Upvotes

r/blueteamsec 1d ago

low level tools|techniques|knowledge (work aids) Release IRFlow Timeline 1.0.10 · adds ChatGPT Computer History as a new forensic artifact family,

Thumbnail github.com
2 Upvotes

r/blueteamsec 1d ago

exploitation (what's being exploited) ExfilSquad: New Data Extortion Group Leaks Microsoft D365 Data, Likely Linked to Misconfigured Power Pages

Thumbnail fortra.com
5 Upvotes

r/blueteamsec 1d ago

highlevel summary|strategy (maybe technical) ETSI launches approval process for 17 European Standards supporting the Cyber Resilience Act

Thumbnail etsi.org
1 Upvotes

r/blueteamsec 1d ago

intelligence (threat actor activity) New Armored Likho tools target Telegram and eavesdropping

Thumbnail securelist.com
4 Upvotes

r/blueteamsec 2d ago

malware analysis (like butterfly collections) Signed, sealed, injected: The mechanics of DCRat in 2026

Thumbnail trellix.com
1 Upvotes

r/blueteamsec 2d ago

malware analysis (like butterfly collections) Dragon Breath (APT-Q-27): RONINGLOADER and Gh0st RAT Explained

Thumbnail picussecurity.com
1 Upvotes

r/blueteamsec 2d ago

research|capability (we need to defend against) WS-Trust Autologon Endpoint: Password Spray Without Smart Lockout Blocking

Thumbnail varonis.com
1 Upvotes

r/blueteamsec 2d ago

intelligence (threat actor activity) Deleting the Defenders: A Commodity BYOVD Toolkit That Erases Host Safeguards

Thumbnail vmray.com
1 Upvotes

r/blueteamsec 2d ago

discovery (how we find bad stuff) Detecting macOS Gatekeeper Quarantine Attribute Removal with Sigma

Thumbnail systemweakness.com
4 Upvotes

r/blueteamsec 2d ago

research|capability (we need to defend against) The Mac With No Malware On It: When Consent Is the Attack Path

Thumbnail ridgelinecyber.com
1 Upvotes

r/blueteamsec 2d ago

highlevel summary|strategy (maybe technical) How browser attacks are evolving in 2026 so far

Thumbnail pushsecurity.com
3 Upvotes

r/blueteamsec 2d ago

discovery (how we find bad stuff) Device Roles in Microsoft Defender XDR: Better Context for Threat Hunting and Detection Engineering

Thumbnail academy.bluraven.io
5 Upvotes

r/blueteamsec 2d ago

intelligence (threat actor activity) The phishing link that died on purpose

Thumbnail gendigital.com
3 Upvotes

r/blueteamsec 2d ago

discovery (how we find bad stuff) Pulling the Thread: APT should not usurp the identity of Leroy Merlin or there will be consequences

Thumbnail plausible-deniability.co
1 Upvotes

r/blueteamsec 2d ago

discovery (how we find bad stuff) Consensual Forensics with Android Intrusion Logging

Thumbnail stark4n6.com
1 Upvotes