Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects the execution of suspected Sauron Loader components staged in C:\ProgramData\keyroll\ (rnpkeys.exe or tdwp.dll) followed by an outbound network connection from the same host within a 2-minute window. This behavior correlates the staging of malicious binaries with the loader's automated outbound registration attempt.
Detects the execution of suspected Sauron Loader components staged in C:\ProgramData\keyroll\ (rnpkeys.exe or tdwp.dll) followed by an outbound network connection from the same host within a 2-minute window. This behavior correlates the staging of malicious binaries with the loader's automated outbound registration attempt.
Detects the execution of attrib.exe spawned by known Sauron Loader process names (rnpkeys.exe, rnp.exe, or tdwp.exe). The rule flags instances where attrib.exe is executed without its typical command-line arguments (file attribute flags), suggesting it is being used as a surrogate process for injected C2-tasked shellcode.
Detects instances where the rnpkeys process (likely used for GPG-related operations) spawns common Windows living-off-the-land binaries such as rundll32, regsvr32, msiexec, cmd, powershell, or wscript. It specifically monitors for patterns indicating potential script execution from temporary folders, the bypass of PowerShell execution policies, or the installation of products via msiexec, which may indicate malicious activity following initial compromise or delivery of a malicious payload.
Detects the execution of rnpkeys.exe from a specific path, followed by the loading of expected DLLs (rnp.dll or tdwp.dll) from the same directory, and a subsequent network connection on port 443. This behavior pattern is consistent with DLL side-loading used to establish a network-based command and control channel.
Detects the execution or presence of a malicious MSI installer file used by the Sauron Loader. This rule identifies files that exhibit the MSI OLE compound file structure in conjunction with specific file paths (C:\ProgramData\keyroll) and the presence of identified malicious components (rnpkeys.exe, rnp.dll, and tdwp.dll), or matches known SHA256 file hashes associated with this loader.
Detects periodic outbound network connections from rnpkeys.exe characteristic of the Sauron Loader C2 beaconing. The rule identifies a consistent heartbeat pattern (approx. 600 seconds) between successful C2 polls to the same remote host, distinguishing it from typical user-driven browser traffic.
Detects the creation of scheduled tasks using schtasks.exe or PowerShell that reference specific task names associated with potentially suspicious activity or persistence (e.g., PlutonAgentScheduler, EnterpriseMgmtServicesScheduler). The rule specifically looks for tasks being placed or modified within 'microsoft' or 'pluton' directories or paths, which may indicate an attempt to masquerade as legitimate system services.
Detects the creation of scheduled tasks using schtasks.exe or PowerShell that reference specific task names associated with potentially suspicious activity or persistence (e.g., PlutonAgentScheduler, EnterpriseMgmtServicesScheduler). The rule specifically looks for tasks being placed or modified within 'microsoft' or 'pluton' directories or paths, which may indicate an attempt to masquerade as legitimate system services.
Detects the creation of scheduled tasks using schtasks.exe or PowerShell that reference specific task names associated with potentially suspicious activity or persistence (e.g., PlutonAgentScheduler, EnterpriseMgmtServicesScheduler). The rule specifically looks for tasks being placed or modified within 'microsoft' or 'pluton' directories or paths, which may indicate an attempt to masquerade as legitimate system services.
This rule monitors for activity associated with specific known malicious file names (killer.exe, kill.exe) and network connections to a set of identified malicious IP addresses. It aggregates events from DeviceFileEvents, DeviceProcessEvents, and DeviceNetworkEvents to identify potential communication or presence of these malicious artifacts.
This rule monitors for activity associated with specific known malicious file names (killer.exe, kill.exe) and network connections to a set of identified malicious IP addresses. It aggregates events from DeviceFileEvents, DeviceProcessEvents, and DeviceNetworkEvents to identify potential communication or presence of these malicious artifacts.
This rule detects modifications to Group Policy Objects (GPOs) that are either explicitly marked as malicious based on known indicators (GUIDs or 'PAYLOAD' strings) or involve unauthorized modifications to domain-root or organizational unit GPO links. It monitors Active Directory security event logs for object changes.
Detects endpoint, process, and network activity associated with the 'TaskStomp' threat actor, specifically targeting known malicious file hashes, command-and-control domains, and specific URLs used in their campaigns.
Detects MayaBot's scheduled-task persistence chain by correlating two signals on the same device within a 60-minute window: (1) schtasks.exe creating a daily task referencing a hidden batch script (update.bat/backup.bat/firewall-update.bat) under AppData\Local, spawned from wscript.exe/cscript.exe/cmd.exe, and (2) cmd.exe launching a hidden-window PowerShell process referencing the same batch scripts under AppData\Local. Requiring both signals together, anchored to the AppData\Local path, sharply reduces false positives compared to alerting on either behavior alone.
Detects HTTP(S) requests to known SideCopy/ReverseRAT payload-delivery URLs identified in Operation SideCopy spear-phishing campaigns targeting Indian academia.
Detects network connections to known SideCopy/ReverseRAT command-and-control infrastructure, including a static C2 IP address and two C2/hosting domains (matched exactly and as proper subdomains to avoid substring false positives).
Detects network connections to known SideCopy/ReverseRAT command-and-control infrastructure, including a static C2 IP address and two C2/hosting domains (matched exactly and as proper subdomains to avoid substring false positives).
Detects known file hashes associated with SideCopy/ReverseRAT.
Detects the use of rundll32.exe to execute comsvcs.dll's MiniDump functionality against the LSASS process, a common technique for dumping credentials. The rule includes behavioral correlation by identifying the same user account executing this pattern on multiple devices within a one-hour window.
Detects a potential process hollowing technique where 'Finalized.dll' (loaded from unconventional locations like a ComponentsFolder or System32) is used to spawn 'clspack.exe' in a suspended state from a non-standard path (e.g., AppData\Microsoft). This sequence indicates an attempt to mask malicious execution under a legitimate process name.
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