"Send me a quick text"Episode Description – Defender BriefingTMPN Stealer, derived from the open-source “Skuld” project, is an information-stealing malware that abuses Discord webhooks and client-side script injection to exfiltrate credentials, tokens, and 2FA codes. Once installed, it persists in the system, hides its activity, and bypasses security controls to maintain access. The attacker leverages Discord’s trusted infrastructure to blend exfiltration traffic with normal user activity, making detection difficult.Defensive Focus Monitor for unauthorized modifications to Discord client files, unexpected outbound traffic to Discord webhook endpoints, and abnormal Discord API activity (token validation, 2FA code usage). Review startup registry entries for suspicious “Realtek HD Audio Universal Service” values pointing to %APPDATA%\Microsoft\Protect\SecurityHealthSystray.exe. Apply strict endpoint controls to prevent unauthorized script execution within application directories.Known IOCs File: loader.exe SHA256: 5a7e38a45533e0477c3868c49df16d307a3da80b97a27ac4261619ff31a219f8 Registry: HKCU\Software\Microsoft\Windows\CurrentVersion\Run\Realtek HD Audio Universal Service Network:https://discord.com/api/webhooks/1272963856322527274/...https://raw.githubusercontent.com/hackirby/discord-injection/main/injection.jshttps://i.redd.it/68p07sk4976z.jpgDetection Tips Flag any system writing .js files into Discord’s appdata directories. Monitor PowerShell usage of Set-MpPreference with security feature disable flags. Inspect outbound Discord traffic for large JSON payloads or repeated authentication token validation requests.Thanks for spending a few minutes on the CyberBrief Project. If you want to dive deeper or catch up on past episodes, head over to cyberbriefproject.buzzsprout.com. You can also find the podcast on YouTube at youtube.com/@CyberBriefProject — I’d love to see you there. And if you find these episodes valuable and want to support the project, you can do that here: buzzsprout.com/support Your support means a lot. See you in the next one, and thank you for listening.

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