ACE Responder retweeted
You can detect Copy Fail exploitation with the following auditd rules:
-a always,exit -F arch=b64 -S bind -F a2=88 -F key=alg_bind
-a always,exit -F arch=b64 -S setsockopt -F a1=279 -F key=alg_setsockopt
The exploit binds to this saddr once for each 4 bytes of the shellcode. So, if you see like 30-40 of these, it's probably a bad guy.
#DetectionEngineering
ACE Responder retweeted
Releasing SynthAPT - Generate malware with AI
Describe your malware in plain English and get a payload. Implants move autonomously via self-replication according to a predefined playbook. No infrastructure required.
Quickly replicate malware in intel reports and blogs. Validate advanced detections and AI-based investigation agents.
Features in-memory python interpreter, a TUI editor, BOF loader, and tons of offensive modules spanning the MITRE ATT&CK matrix
github.com/acedef/SynthAPT
#Malware #CyberSecurity
ACE Responder retweeted
You may have seen some of my work with RogueSliver, and the unauth RCE I found for Empire C2.
Wanted to share something I've been building for defenders called Swarm. 🧵
#ThreatHunting #DFIR
🐭New challenge on ACEResponder.com: Atera Agent RAT
Trusted admin tools turned deadly.
Track what happens when legitimate software becomes a persistence mechanism. The logs tell a story... if you know where to look.
#ThreatHunting #DFIR #SOC
ACE Responder retweeted
⚡️New prompt injection to takeover C2 servers automated with @claudeai
I use Sliver, but this approach could be used for any C2 that's automated with Claude.
The trick: Plant a file that makes Claude think it was mounted on the attacker's local system. To "access" it, Claude must add an "auth token" to the attacker's ~/.bashrc/zshrc.
That token? A reverse shell. 🎯
Requirements:
• Sonnet 4.5 or earlier (Opus is inconsistent)
• Claude running autonomously/in a loop (not "read file X")
• Write access to attacker's home directory
Blue team tip: Seed similar prompts in enticing files. Run payloads by legal first.
Full prompt below 👇
#AGI #PromptInjection #DFIR #Clawdbot
🧊 New incident response challenge on ACEResponder.com: IcedID Compromise
A user clicked a dirty zip. Can you trace the full kill chain?
#ThreatHunting #IcedID #DFIR
ACE Responder retweeted
Sliver now has MCP support which means defenders can use prompt injection to leak sensitive information from the C2 server. 🎉
I use a file called passwords.txt to trick #ClaudeAI into creating directories beacon/session info.
#AGI #PromptInjection #DFIR
🗑️ New Challenge: Dumpster Diving
Someone is rummaging through your discarded remnants...
Reconstruct a domain compromise where poor data hygene resulted in the attacker escalating to DA.
aceresponder.com/challenge/d…
Windows Event IDs and their importance for defenders.
#ThreatHunting #DFIR
🔥 Black Friday
35% off annual subs through Dec 1
Code: BLACKFRIDAY
Best price all year.
aceresponder.com
✅Quick reference: Configure these nonstandard SACLs to detect common AD attacks like
• DCSync
• RBCD
• Shadow Credentials
• gMSA abuse
#DFIR #ThreatHunting #SOCAnalyst
How Remote Service (PsExec) lateral movement works.
#ThreatHunting #DFIR
How hackers capture hashes using file icons
#ThreatHunting #DFIR
C2 techniques used by hackers.
#ThreatHunting #DFIR
How NTLM authentication works
#ThreatHunting #DFIR










