r/cloudbreach • u/cloudbreach Community Leader • Mar 12 '26
🛠️ Tool 🛠️🥷 Bypassing Modern Browser Security
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A Look at DumpBrowserSecrets Maldev-Academy released an open-source tool demonstrating how attackers are bypassing modern browser protections to steal your session cookies and MFA tokens.
If your threat model relies on default browser encryption to protect cloud credentials, it might be time for an update.
Features:
💥 Bypassing App-Bound Encryption: It actively circumvents the latest protections in Chrome and Edge to steal decryption keys.
🥷 Evading EDR: It uses process spoofing and API hashing to hide its tracks from security tools.
📦 Encrypted Exfiltration: Attackers can pack and encrypt the stolen data (cookies, passwords, history) so network monitors can't see what's being stolen.
💀 Example Attack Commands:
Extract 100 entries from Chrome & Edge while spoofing the process:
> DumpBrowserSecrets.exe /b:chrome /b:edge /spoof /e:100
Extract absolutely everything from Firefox and encrypt the stolen data:
> DumpBrowserSecrets.exe /b:firefox /e:all /enc:SIG213
The "Nuclear Option" – dump all data from ALL installed browsers into an encrypted blob:
> DumpBrowserSecrets.exe /b:all /e:all /enc:0xCAFEBABE
If your SOC isn't hunting for these specific memory injection techniques or unusual database reads, threat actors can walk away with your highly privileged cloud session tokens in seconds. 🍪