Hillstone Networks

'; } else{ echo ''; } echo 'Hillstone Networks'; } elseif ($_SERVER[HTTP_HOST] == "update1.huaantech.com.cn") { echo ''; echo 'huaantech'; } elseif ($_SERVER[HTTP_HOST] == "update1.dcnetworks.com.cn") { echo ''; echo 'dcnetworks'; } elseif ($_SERVER[HTTP_HOST] == "update1.w-ibeda.com") { if (false===strpos($_SERVER[REQUEST_URI],"/en/")) echo ''; else echo ''; echo 'w-ibeda'; } elseif ($_SERVER[HTTP_HOST] == "update1.hp-telecom.com") { echo ''; echo 'hp-telecom'; } elseif ($_SERVER[HTTP_HOST] == "update1.maipu.com") { echo ''; echo 'Maipu'; } elseif ($_SERVER[HTTP_HOST] == "update1.ncurity.com") { echo ''; echo 'Ncurity'; } elseif ($_SERVER[HTTP_HOST] == "update1.socusnetwork.com") { echo ''; echo 'Socusnetwork'; } else{ echo ''; echo 'Hillstone Networks'; } ?>

RULE（RULE ID：339597）

Rule General Information


Release Date:		2025-11-04

Rule Name:		Tool BRC4 Detection

Severity:

CVE ID:

Rule Protection Details


Description:		Brute Ratel C4 (BRC4) is a powerful red-team adversary framework used to deploy stealthy agents on Windows, execute in-memory payloads, and achieve lateral movement and persistence via diverse C2 channels. This rule targets Empire HTTPListener check-in behavior and detects suspicious BRC4 communication traffic.

Impact:		Attackers use attack tools to attack targets, which can lead to data leakage, service interruption, system crash, data tampering, and illegal access.

Affected OS:		Windows, Linux, Others

Reference:

Solutions

1. Scan the server file system to ensure that no hacking tools and related malicious files are left. 2. Make a complete system backup to ensure the security of server data. 3. Secure the server, restrict access rights, install firewalls, and use secure access control lists.