Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects attempts to bypass URL validation and access sensitive GCP metadata endpoints (169.254.169.254 or metadata.google.internal) using a double-slash (//) prefix injection pattern within URL parameters. This technique is often used in Server-Side Request Forgery (SSRF) attacks to read local resources or metadata credentials from Cloud Run or other GCP compute services.
This rule monitors Android system logs for suspicious activity related to the NearbyConnections API. It specifically flags incomplete UKEY2 handshakes, unauthenticated frame processing, and pre-authentication frame requests, which may indicate attempts to intercept or interfere with local device discovery and connection protocols.
Detects inbound emails that fail SPF, DKIM, or DMARC authentication checks while containing keywords related to invoices or payments in the subject line, and referencing known potentially malicious SaaS URLs (holabrief.com or loopedin.io) in the body or URL fields.
Detects Android applications exhibiting multiple sensitive behaviors simultaneously within a 5-minute window, such as screen recording, audio capture, GPS tracking, and unauthorized access to SMS, call logs, or contacts. This behavior is strongly indicative of malicious mobile spyware.
This rule detects a high volume (50 or more) of HTTP errors (status codes 400 and above) originating from a single client IP address within a 5-minute time window. This behavior can be indicative of various malicious activities such as brute-force attacks, web application vulnerability scanning, or denial-of-service attempts against a web server.
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 repeated restarts of vLLM pods (due to OOMKilled, CrashLoopBackOff, or other failure reasons) that are correlated with a burst of multimodal requests. This pattern can indicate a denial-of-service attack, resource exhaustion, or exploitation of vulnerabilities (such as CVE-2026-22778) targeting the vLLM service, potentially leading to service instability or compromise.
Detects anomalous bulk publication of NPM packages by a specific compromised maintainer account (czirker) targeting the LeoPlatform and LeoInsights organizations, indicative of malicious propagation behavior similar to the Miasma worm.
This rule detects sensitive modifications to payroll-related information in Workday, such as bank account details, direct deposit settings, or payment method changes. It flags instances where such modifications occur from multiple IP addresses for the same user account, which may indicate account compromise and unauthorized attempts to divert funds.
Detects a potential privilege escalation attempt in MyBB where a user with limited Administrator Control Panel (ACP) permissions modifies a user account to join the 'Administrator' group (ID 4) by POSTing to the 'user-users' module.
This rule detects potential exploitation of the PHP StreamBucket SOAP RCE vulnerability (CVE-2026-55199). It monitors for characteristic post-exploitation behaviors, including the spawning of unexpected shell or system utility processes, access to sensitive memory mapping files (/proc/self/maps or /proc/self/mem) for ASLR defeat, creation of specific RCE marker files (e.g., /tmp/php857_rce_*.txt), and anomalous outbound network connections following SOAP request activity.
This rule monitors for the execution of known exploit scripts targeting MyBB forum software. It specifically detects the use of 'mybb_limited_acp_to_admin.py', as well as Python and PHP processes executing command lines that contain indicators of MyBB administrative control panel (ACP) exploitation, such as unauthorized user creation with administrator privileges (gid=4).
Detects execution of specific scripts or suspicious child processes indicative of a MyBB 'limited_acp_to_admin' exploit attempt. This rule looks for known script names related to the PoC and suspicious process lineage where a PHP web server process spawns command shells or scripting interpreters commonly used in post-exploitation activities.
Detects signs of active exploitation of the PHP857 vulnerability. The rule identifies suspicious behaviors associated with this RCE, including the spawning of shells by PHP processes, access to sensitive memory maps (/proc/self/) for ASLR bypass, and the creation of specific indicator files or execution of proof-of-concept strings.
This rule monitors Cisco Unified Communications Manager (UCM) environments for multiple stages of an attack chain, including potential Server-Side Request Forgery (SSRF) attempts against administrative interfaces, suspicious file modifications by service accounts, indicators of privilege escalation, and anomalous outbound network connections from core Cisco processes.
Detects responses from vLLM (or similar services) that leak a Python Imaging Library (PIL)/Pillow heap address through BytesIO exception text. This indicates Stage 1 of the CVE-2026-22778 ASLR bypass vulnerability, where memory addresses are exposed, which could be used by an attacker to bypass Address Space Layout Randomization (ASLR). The rule looks for specific error messages containing '_io.BytesIO object at 0x' followed by a hexadecimal address.
Detects the installation of the BTMOB Android RAT by identifying sideloaded application installations combined with the enablement of sensitive features such as Android Accessibility Services, device administrator registration, or the granting of high-risk permissions (SMS, camera, audio recording) typically used by mobile banking trojans.
This rule monitors for administrative VMware operations (cloning, snapshotting, or process manipulation) performed on sensitive infrastructure servers (such as Domain Controllers, PKI, Vault, or ADFS) that occur outside of a designated maintenance window by non-authorized accounts. It leverages tools like vim-cmd, esxcli, or govc to detect potential unauthorized VM manipulation that could lead to data theft, snapshot-based credential extraction, or unauthorized system changes.
Detects MFA device registration occurring during a suspicious session heavily focused on HR portal access. This rule correlates MFA registration events with access to HR applications like Workday or ADP within a 10-minute window, indicating potential account takeover or unauthorized access attempts.
Detects malicious Python or JavaScript package archives (such as those used in dependency confusion attacks) that contain obfuscated code execution logic (base64 encoded commands) within package installation hooks (setup.py), or those embedding suspicious binary executables (PE/ELF headers) within the package structure.
Detects unauthorized access attempts to ServiceNow Scripted REST APIs, specifically targeting misconfigured endpoints that do not require authentication. This rule monitors for requests made by the 'guest' user, known malicious IP addresses, or requests missing authorization headers directed at potentially vulnerable APIs like 'related_list_edit'.
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