HackBrowserData

HackBrowserData is an open-source browser data extraction utility widely used as a credential-access and information-theft tool in post-compromise operations. It is designed to decrypt and export data stored by major browsers, including Chromium-based browsers, Firefox, and Safari, and supports execution on Windows, macOS, and Linux. Its collection scope includes saved credentials, cookies, browsing history, and in some reporting, additional browser-stored artifacts such as credit card data. Because it is publicly available and easily modified, it is frequently repurposed by both criminal and state-linked operators as a lightweight infostealing component rather than a full intrusion platform.

Operationally, HackBrowserData is typically used after initial access to harvest browser-resident secrets and session material from compromised hosts. Its capabilities support theft of saved passwords and browser cookies, enabling both credential theft and session hijacking. It has been observed in intrusion sets involving server compromise, ransomware affiliate activity, and espionage-oriented campaigns. Reported users include PRC-nexus UNC3569 in collection activity following supply-chain or other compromises, Iranian MuddyWater tooling chains where it was deployed alongside loaders and tunneling components, and intrusion activity attributed to Larva-26009 targeting MS-SQL servers. It has also been assessed as the likely basis for renamed or modified binaries used during BlackCat/ALPHV intrusions.

The tool is also incorporated into malware ecosystems as an embedded or downloaded component. Modified variants have been used by macOS malware such as XCSSET to steal Firefox and other browser data, demonstrating that operators adapt the project for platform-specific collection and exfiltration workflows. Defenders commonly encounter it either as a standalone command-line utility or as a recompiled, renamed, or otherwise customized derivative intended to blend into broader post-exploitation activity.

HackBrowserData is best classified as an infostealer focused on browser-resident data. It is not inherently tied to a single delivery vector; observed use is predominantly as a secondary payload or operator tool after compromise rather than as the initial infection mechanism.