Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
11 detections
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Detects the loading of 'libcurl.dll' or related DLL patterns from suspicious directories such as '\Microsoft\Crypto\RuntimeBroker\', often associated with process masquerading or side-loading activities. The rule also monitors for the execution of suspicious binaries ('Tax_Notice_45594.exe') or binaries that mimic 'Notepad++' metadata from within these paths.
Detects the loading of 'libcurl.dll' or related DLL patterns from suspicious directories such as '\Microsoft\Crypto\RuntimeBroker\', often associated with process masquerading or side-loading activities. The rule also monitors for the execution of suspicious binaries ('Tax_Notice_45594.exe') or binaries that mimic 'Notepad++' metadata from within these paths.
Detects the loading of 'libcurl.dll' or related DLL patterns from suspicious directories such as '\Microsoft\Crypto\RuntimeBroker\', often associated with process masquerading or side-loading activities. The rule also monitors for the execution of suspicious binaries ('Tax_Notice_45594.exe') or binaries that mimic 'Notepad++' metadata from within these paths.
Detects execution of 'BrowserCore.exe' when the initiating (parent) process is not a recognized web browser (msedge.exe, chrome.exe, or firefox.exe). This rule flags potential process masquerading or misuse of the BrowserCore utility, particularly when spawned by command interpreters or the Task Scheduler.
Detects execution of 'BrowserCore.exe' when the initiating (parent) process is not a recognized web browser (msedge.exe, chrome.exe, or firefox.exe). This rule flags potential process masquerading or misuse of the BrowserCore utility, particularly when spawned by command interpreters or the Task Scheduler.
This rule detects unusual parent-child process relationships for 'svchost.exe' and 'explorer.exe'. Specifically, it flags instances where 'svchost.exe' is spawned by a process other than 'services.exe', 'msiexec.exe', or another 'svchost.exe' instance. It also flags 'explorer.exe' being spawned by a process other than 'userinit.exe' or another 'explorer.exe' instance. These relationships can indicate process injection, masquerading, or other forms of malicious activity.
This rule detects HTTP requests that contain 'schtasks' and '/create' in the URI, indicating an attempt to create a scheduled task. This activity is often associated with adversaries establishing persistence or executing commands on a compromised system, potentially breaking the process tree for forensic analysis. The rule specifically looks for these keywords in a case-insensitive manner within the HTTP URI.
Yara rule that detects BPFDoor backdoor.
This query generates process trees of given processes and performs anomaly detection on the process trees. It generates process trees up to 7th level.
The query can be used as a template to perform anomaly detection on specific processes like winword.exe, powerpnt.exe, w3wp.exe, etc. The query runs without any performance issues in large environments.
Detailed explanation can be found here
Reference - https://mergene.medium.com/detecting-threats-with-process-tree-analysis-without-machine-learning-838d85f78b2c
The query can be used as a template to perform anomaly detection on specific processes like winword.exe, powerpnt.exe, w3wp.exe, etc. The query runs without any performance issues in large environments.
Detailed explanation can be found here
Reference - https://mergene.medium.com/detecting-threats-with-process-tree-analysis-without-machine-learning-838d85f78b2c
This analytic detects an unusual process execution pattern where a process running from `C:\Windows\SysWOW64\` attempts to execute a binary from `C:\Windows\System32\`. In a typical Windows environment, 32-bit processes under SysWOW64 should primarily interact with 32-bit binaries within the same directory. However, an execution flow where a 32-bit process spawns a 64-bit binary from System32 can indicate potential process injection, privilege escalation, evasion techniques, or unauthorized execution hijacking.
The following analytic detects an anomaly where an svchost.exe process is spawned by a parent process other than the standard services.exe. In a typical Windows environment, svchost.exe is a system process that hosts Windows service DLLs, and is expected to be a child of services.exe. A process deviation from this hierarchy may indicate suspicious behavior, such as malicious code attempting to masquerade as a legitimate system process or evade detection. It is essential to investigate the parent process and associated behavior for further signs of compromise or unauthorized activity.


