Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects when Microsoft Office applications (Word, Excel, PowerPoint) create INI files within the `C:\ProgramData\` directory. This behavior can be indicative of malicious activity, such as macro-enabled documents dropping configuration files or payloads, or other forms of malware attempting to establish persistence or store data in a less scrutinized location.
Detects suspicious process injection attempts where common scripting/proxy execution tools (wscript.exe, cscript.exe, mshta.exe, powershell.exe, msiexec.exe) are used to inject into other processes (RegAsm.exe, InstallUtil.exe, vbc.exe, svchost.exe, explorer.exe) using CreateRemoteThread. The detection is further refined by looking for command-line indicators often associated with malicious activity, such as downloading content or executing scripts.
KQL Query from file: INC Ransomware Command Execution
Detects processes making HTTP/HTTPS requests to localhost on ports 40341 or 40342 for '/metadata'. This pattern can indicate local service discovery, inter-process communication, or potentially malicious activity attempting to interact with local services, possibly for credential access or privilege escalation.
Detects suspicious command-line executions involving PowerShell or WMI, combined with network-related keywords (http, https, encodedcommand, FromBase64String), originating from common user applications like Microsoft Word (winword.exe) or Windows Explorer (explorer.exe). This pattern can indicate malicious activity such as script execution, download of payloads, or obfuscated command execution.
Medusa Ransomware Script Execution
This rule detects the execution of known credential dumping tools, Mimikatz and ProcDump, when specific command-line arguments associated with credential extraction from LSASS are used. It specifically looks for `mimikatz.exe` or `procdump.exe` combined with arguments like `sekurlsa`, `logonpasswords`, or `-ma` which are commonly used to dump credentials from memory.
Detects suspicious process activity originating from WSMProvHost, suggesting potential lateral movement or remote command execution
Detects execution chains where a suspicious DLL (autorun.dll) is loaded from user-controlled directories and followed by a silent MSI installation. This pattern is commonly associated with malware staging and secondary payload deployment.
Detects inbound RPC calls to the Windows Remote Registry interface using operation numbers associated with registry save/backup operations, which may indicate credential dumping via remote registry access. This rule specifically looks for RPC UUID '338cd001-2244-31f1-aaaa-900038001003' and operation numbers 20 or 31, which correspond to registry save/backup functions.
Flags executables whose embedded metadata identifies them as Cloudflared while the filename differs from expected distribution names, suggesting potential evasion through binary renaming.
Identifies 'forfiles.exe' being executed with a combination of multiple command-line switches ('/c', '/p', '/m' or their hyphenated equivalents). This pattern can indicate automated scripting or malicious Living-off-the-Land activity, where 'forfiles.exe' is used to execute commands on multiple files or in specific directories.
Detects named pipe activity with remote access enabled, initiated by JsonVMAccessExtension.exe running as SYSTEM. This may indicate abuse of the Azure VM Access Extension for unauthorized remote access.
Detects trusted .NET tooling launching shells, scripting engines, or administrative utilities that are not typically associated with legitimate compilation workflows, potentially indicating malicious execution or post-exploitation.
Identifies processes consistent with Cloudflare Quick Tunnel usage by detecting unauthenticated cloudflared executions that publish local services through the --url option. Such behavior may enable unauthorized external access to internal resources.
Identifies the creation of PowerShell or batch files in unusual ProgramData subdirectories by command-line interpreters, which may indicate malware staging or persistence preparation.
This rule detects suspicious large file transfers over the network, specifically looking for connections where more than 100MB (104857600 bytes) of data has been sent or received. It then aggregates these transfers by device and remote IP within one-hour bins and flags if five or more such large transfers occur within that hour. This behavior can be indicative of data exfiltration, often associated with ransomware attacks or other malicious data theft activities.
This rule detects attempts by a device to resolve specific domain names known to be associated with ransomware killswitches. Successful resolution of these domains could indicate a ransomware infection attempting to halt its encryption process.
Detects suspicious file downloads from the internet where common DLLs (wininet.dll, urlmon.dll, msxml3.dll) are initiating the file creation of executable, DLL, PowerShell, or batch files. The rule specifically looks for scenarios where 5 or more such files are created by the same initiating process on a device, indicating potential malicious activity like ingress tool transfer.
This rule detects suspicious file activity indicative of ransomware by monitoring for a high volume of file creations or renames where the filenames contain common ransomware-related extensions such as '.encrypted', '.locked', or '.ransom'. It aggregates these events over a one-hour period per device and triggers if 20 or more such events occur.
This rule detects suspicious outbound DNS queries originating from a device that are not directed to common public DNS servers (Google DNS, Cloudflare DNS). The rule specifically flags queries where the remote DNS name contains keywords like 'malware', 'c2', or 'c&c', and where at least 5 such queries occur within an hour from the same device. This pattern can indicate potential malware communication or command and control (C2) activity.
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