Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects DNS lookups and outbound network connections to known PhantomRaven command and control (C2) infrastructure, including specific domains and IP addresses. The rule also specifically identifies potential data exfiltration attempts to the '/mozbra.php' endpoint.
Detects inbound network connections from external, non-private IP addresses to local ports 6081 and 6082. These ports are used by the PAN-OS User-ID Authentication Portal, which is actively targeted by CVE-2026-0300.
Detects DNS queries or network connections to known PhantomRaven Wave 5 command-and-control infrastructure (domains and IP addresses). This rule identifies communication with specific malicious domains and IP addresses associated with the PhantomRaven campaign, indicating potential compromise or attempted communication with adversary infrastructure.
Detects inbound network connections from external, non-private IP addresses to local ports 6081 and 6082. These ports are used by the PAN-OS User-ID Authentication Portal, which is actively targeted by CVE-2026-0300.
Suspicious PAN-OS Captive Portal Access
Cortex XDR
Detects anomalous or repetitive access to PAN-OS Captive Portal HTTP endpoints which may indicate active scanning for CVE-2026-0300 vulnerability exposure.
Identifies network connections targeting port 6082, commonly used by the PAN-OS User-ID portal and specifically targeted in the CVE-2026-0300 PoC exploit to deliver a buffer overflow payload.
CVE-2026-0300 Scanner Tool User-Agent
Cortex XDR
Detects the use of the CVE-2026-0300 scanner tool by its distinct User-Agent string attempting to identify vulnerable PAN-OS Captive Portals.
Detects the initial staging phase of the CVE-2026-41940 exploit chain, where an attacker intentionally generates a pre-authentication session file on the target server via failed POST requests to the login_only endpoint.
This rule detects DNS requests to hyphen mirrored domains. This tactic has been seen from Silver Fox to deliver the Atlas RAT via Weaponized VPN Installers. Known bad according to the Hexastrike article
trezor-trezor[.]com
signal-signal[.]com
quickq-quickq[.]com
eyy-eyy[.]com
trezor-trezor[.]com
signal-signal[.]com
quickq-quickq[.]com
eyy-eyy[.]com
This rule detects an IP address attempting to log in unsuccessfully to more than 20 distinct user accounts. This behavior is indicative of a brute-force attack or password spraying attempt against multiple accounts from a single source.
For network requests to the GitHub API containing specific staging and fallback markers (LongLiveTheResistanceAgainstMachines or beautifulcastle) used by TeamPCP in the Bitwarden CLI campaign to retrieve C2 instructions.
This rule detects an IP address attempting to log in unsuccessfully to more than 20 distinct user accounts. This behavior is indicative of a brute-force attack or password spraying attempt against multiple accounts from a single source.
Detects DNS resolution requests for the known Nexcorium C2 domain. The Nexcorium Mirai variant relies on this command-and-control server to receive attack parameters for large-scale DDoS campaigns.
Detects DNS resolution requests for the known Nexcorium C2 domain. The Nexcorium Mirai variant relies on this command-and-control server to receive attack parameters for large-scale DDoS campaigns.
Detects a specific combination of HTTP GET, POST, and PUT requests to the GitHub API (api.github.com) within a short timeframe. This sequence matches the behavior of the AdaptixC2 custom listener used by Tropic Trooper, which uses GitHub issues for beaconing/task polling and the contents API for data exfiltration. The detection has been refined to look for specific AdaptixC2 operational keywords ('beat', 'upload', 'download') to reduce noise.
Detects HTTP requests containing the custom 'X-Hacked-By' header with the value 'Nexus Team . Exploited By Erratic', which is associated with the Nexus Team's exploitation of CVE-2024-3721 against TBK DVR devices. This rule specifically looks for the unique header pattern used by this threat actor.
Detects network connections, DNS requests, and HTTP traffic to known Tropic Trooper C2 infrastructure, indicating potential AdaptixC2 or Cobalt Strike beaconing from compromised endpoints.
Detects 5 or more failed logins to a firewall management interface, followed immediately by a successful login for the same user and from the same IP.
This rule detects external brute-force attempts against firewall authentication mechanisms. It triggers when 15 or more failed login attempts from a single external IP address occur within a 15-minute window. The rule specifically filters for 'USER_LOGIN' events with a 'BLOCK' or 'FAIL' security result and excludes internal RFC1918 IP addresses to focus on external threats.
Detects network connections to known malicious infrastructure domains and IP addresses associated with the Checkmarx supply chain compromise. The compromised KICS images and mcpAddon.js payload use these hardcoded endpoints to exfiltrate stolen credentials and tokens.
Detects network connections to the known command and control (C2) server and port associated with the compromised axios package payload. This rule specifically looks for network connections or DNS requests to 'sfrclak.com' or connections to IP address '142.11.206.73' on port 8000.
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