Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the loading of known vulnerable drivers (rwdrv.sys, hlpdrv.sys) used for potential Bring Your Own Vulnerable Driver (BYOVD) attacks, accompanied by evidence of antivirus tampering through process execution or the creation of suspicious directories related to AV killing utilities.
Detects the creation of a scheduled task named 'WindowsUpdateTempFileCleanUp' or suspicious scheduled task naming conventions associated with the BeepRAT malware. The rule specifically monitors for the execution of a TCC loader chain, often masquerading or leveraging configurations located within the %LOCALAPPDATA%\TCC directory to maintain persistence with high privileges.
Detects unauthorized attempts to escalate privileges within the MyBB Administrative Control Panel (ACP). The rule identifies malicious activity such as creating an administrator user by assigning usergroup 4, or accessing restricted configuration settings via HTTP POST/GET requests directed at the admin index script.
This rule monitors Linux-based SD-WAN infrastructure (vManage, vSmart, vBond) for suspicious persistence mechanisms, unauthorized account creation, unauthorized SSH key modifications, credential file tampering, and rogue configuration changes related to OMP/IPSec peering and unauthorized tenant-list uploads.
This rule detects the exploitation of CVE-2026-20245 on Cisco SD-WAN Manager (vManage). It monitors for two distinct phases: 1) The suspicious upload of a tenant-list CSV file via CLI using a malicious filename, and 2) A subsequent privilege escalation attempt where the 'admin' user executes 'su' to switch to a 'troot' user, which is indicative of a backdoor account creation following successful exploitation.
Detects unauthorized persistence mechanisms on Cisco SD-WAN Manager, vSmart, and vBond nodes by monitoring for local account creation (e.g., useradd), modification of sensitive authentication files (/etc/passwd, /etc/shadow), and illicit SSH key placement in authorized_keys. This rule specifically monitors for known exploit paths involving the 'troot' account and related command-line activity indicative of unauthorized administrative access.
This rule detects interactive logons (LogonType 10) where a single account from the same domain logs into multiple distinct devices. This could indicate an attacker using compromised credentials to move laterally within the network or access multiple systems.
This rule detects changes to a user account's User Account Control (UAC) settings, specifically when the 'NewUacValue' is set to '0x2080'. This value corresponds to the 'ACCOUNTDISABLE' flag, indicating that a user account has been disabled. Monitoring such changes can help identify potential malicious activity where an attacker might disable legitimate user accounts to disrupt operations or hinder incident response.
This rule detects the presence of known malicious drivers (hlpdrv.sys, rwdrv.sys) by their SHA256 hash or file path. It also identifies attempts to install these drivers via service creation commands and monitors for modifications to Windows Defender registry keys that could disable its functionality, indicating defense evasion.
This rule detects potential persistence mechanisms related to browser extensions. It looks for processes launching Chrome or Edge with the '--load-extension' command-line argument, which can be used to load unpacked extensions. Additionally, it monitors registry modifications to 'ExtensionInstallForcelist' that contain 'http' or 'crx', indicating a forced installation of an extension, potentially from a remote source or a local file.
Detects instances where a guest user or an external account (identified by the #EXT# suffix) performs an operation to add a new member to a Microsoft 365 Group. This behavior can be indicative of a guest account being compromised or misused to escalate privileges or gain unauthorized access by modifying group memberships.
Detects the installation and operation of the RustDesk remote access tool as a persistent Windows service. This behavior has been identified in the Akira ransomware intrusion chain where adversaries utilize remote access tools for post-compromise persistence and control. The rules monitor for service creation via command-line utilities (sc.exe, PowerShell), registry modifications related to service configurations, and Windows Service Control Manager events (Event ID 7045) that register RustDesk as a persistent system service.
Detects instances where a user successfully authenticates from geographically distant locations within a short timeframe (impossible travel) followed by sensitive privileged operations within a 4-hour window.
Detects remote LSASS memory dumping using the built-in comsvcs.dll MiniDump functionality, invoked by rundll32.exe. This activity is consistent with tools like lsassy, which leverage techniques such as SMB service creation, WMI, scheduled tasks, and DCOM/MMC to execute the dump remotely. The rule monitors for command lines containing comsvcs.dll and MiniDump, targeting the LSASS process or staging files in the Windows Temp directory.
Detects the creation of domain accounts named 'backup_DA' or 'backup_EA' and the subsequent addition of the 'backup_EA' account to the 'Enterprise Admins' group. This behavior is associated with the persistence and privilege escalation tactics used by the Akira ransomware group.
Detects symlink or junction point creation by standard users targeting sensitive system directories, a core mechanism of CVE-2026-41091.
This rule detects process execution where the command line arguments contain keywords commonly associated with memory corruption and exploitation (e.g., shellcode, buffer overflow, heap/stack manipulation). The rule further filters for small executable files (less than 100KB) to increase the likelihood of identifying malicious tools or stagers.
This rule detects AppDomainManager injection attempts by monitoring for the loading of suspicious DLLs (related to AppDomainManager functionality) by specific processes or from unexpected file paths. The rule specifically targets attempts to hijack the .NET AppDomainManager class by checking against known suspicious filenames and excluding legitimate .NET framework directories, which is a common technique used for arbitrary code execution in the context of a target process.
Detects the creation of scheduled tasks using the Windows schtasks utility where the task action points to a file located in common user-writable directories such as AppData, Temp, Users\Public, or Downloads. This behavior is frequently associated with persistence mechanisms used by malware and backdoors.
This rule detects activities associated with the MiniBrowse tool, specifically targeting unauthorized access to browser credential stores (Login Data, Cookies) and staging files for exfiltration. Additionally, it monitors for process injection events where MiniBrowse components are injected into legitimate browser processes such as Chrome or Edge.
Detects instances where a user within the MyBB Admin Control Panel (ACP) attempts to create a new user account and assign it to the administrator usergroup (gid=4). This activity is indicative of a privilege escalation attempt by an authenticated user with limited administrative access or an attacker who has compromised such an account.
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