Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects command-line registry modifications that enable 'EveryoneIncludesAnonymous' or disable 'RestrictAnonymous' in the Local Security Authority (LSA) configuration. Attackers may perform these actions to lower the environment's security posture, explicitly allowing anonymous LSA enumeration, which aids in internal network discovery.
Detects the execution of bcdedit.exe to disable the Windows Recovery Environment or ignore boot failures. This is a common pre-encryption technique used by Kyber ransomware to prevent defenders from restoring the OS.
This query hunts for potential execution linked to the Axios npm supply chain compromise by detecting node.exe process activity tied to suspicious npm lifecycle markers (postinstall, setup.js, plain-crypto-js). It helps identify systems that may have executed malicious install-time scripts.
Detects the PowerShell 'Stop-VM -TurnOff' pattern used by Kyber ransomware's "experimental" Hyper-V functionality to force hard-stop all running VMs prior to encryption, releasing file locks on VHD/VHDX disks. This rule also includes an extended field 'IsEnumeration' to identify instances where 'Get-VM' and 'ConvertTo-Json' are used, which could indicate VM enumeration prior to termination.
This rule detects multiple TTPs (Tactics, Techniques, and Procedures) associated with advanced adversaries, including QEMU virtualization abuse for defense evasion, creation of malicious scheduled tasks (specifically 'TPMProfiler'), rogue account or service creation (e.g., 'CtxAppVCOMService' or 'AppMgmt' service via 'sc.exe'), port forwarding/tunneling commands (using 'ssh' or 'portproxy' with specific ports), credential access attempts via 'vssuirun.exe' or printing 'NTDS.dit', and potential DLL sideloading involving 'ADNotificationManager.exe' and 'vcruntime140_1.dll'. It also includes IOCs for specific IPs, domains, and file hashes.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32631
https://github.com/Nightmare-Eclipse/UnDefend
https://github.com/Nightmare-Eclipse/RedSun/blob/main/README.md
Detects curl commands using user-agent strings that Sapphire Sleet uses as campaign tracking identifiers in their macOS intrusion chain. Each stage of the cascading payload delivery uses a distinct UA (mac-cur1 through mac-cur5) to route requests to different server paths serving AppleScript payloads or ZIP archives containing malicious .app bundles.
https://github.com/blackarrowsec/redteam-research/tree/master/CVE-2026-33829
This rule detects file creation, modification, or renaming events related to 'TieringEngineService.exe' in the 'C:\Windows\system32\' directory, or process execution of 'TieringEngineService.exe' running as the 'SYSTEM' account. This activity could indicate suspicious system-level operations or potential abuse of a legitimate Windows component.
This rule detects Windows devices running an antivirus platform version that is not '4.18.26030.3011'. This could indicate an outdated antivirus installation, which might be a result of defense evasion tactics or a failure in update mechanisms, leaving the system vulnerable.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33825
This rule detects suspicious execution patterns of rundll32.exe. Specifically, it looks for rundll32.exe being called with an obfuscated ordinal number (e.g., #+, #-, #0, #655, #656) which can be used by adversaries to obscure malicious code. Additionally, it identifies rundll32.exe attempting to perform a MiniDump of the 'comsvcs' process, which is a common technique for OS credential dumping.
this query combines Queries in a single Query created from Ayush Anand and published on https://www.securityinbits.com/detection-engineering/lsass-dump-comsvcs-rundll32/
this query combines Queries in a single Query created from Ayush Anand and published on https://www.securityinbits.com/detection-engineering/lsass-dump-comsvcs-rundll32/
Detects instances where a web browser (Chrome, Edge, Firefox, Brave, or Internet Explorer) launches 'ms-screensketch'. This activity is unusual as browsers typically do not directly invoke system utilities like Screen Sketch. This could indicate an attempt to capture screen content, potentially for data exfiltration or reconnaissance, or an unexpected browser behavior.
Detects instances where Windows screen capture tools (Snipping Tool or Screen Sketch) initiate network connections to external IP addresses on ports commonly associated with Server Message Block (SMB) or Common Internet File System (CIFS). This could indicate an attempt to exfiltrate captured screenshots to an external server.
Detects the execution of Windows Snipping Tool (SnippingTool.exe) or Screen Sketch (ScreenSketch.exe) when launched with the 'ms-screensketch' command-line argument. This behavior is indicative of a user or process taking a screenshot, which could be part of information gathering by an adversary.
This rule analyzes historical logon, process, and network activity for a specified device over a configurable lookback period. It aims to validate whether a device, potentially flagged as decommissioned or stale, exhibits a pattern of sporadic, legitimate use (e.g., executive laptops, break-glass machines) rather than continuous or unauthorized activity. The output provides a daily timeline of activity, helping to differentiate between truly dormant assets and those with intermittent, legitimate usage.
Detects command-line activity indicative of mounting a remote WebDAV share, a technique used to bypass browser security controls and deliver malware. This rule looks for specific keywords used to force a connection to a remote WebDAV server.
KQL Query from file: DefenderXDR BlueHammer Detection
Detects the execution of the ScreenConnect ClientSetup MSI from the C:\Temp directory, indicating potential unauthorized deployment associated with fileless loader campaigns.
EXE Search
KQL
Gives you a report from a specific date and onwards of a certain file name that was used within the tenant. (Replace "Outlook.exe" with the file name you are looking for, and replace date to desired range)
Notes: LocalIP ≠ RemoteIP = Outbound connection
Notes: LocalIP ≠ RemoteIP = Outbound connection
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