Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule performs a comprehensive hunt for activities associated with the MuddyWater (also known as Boggy Serpens) threat group, specifically relating to their 'Operation Olalampo' campaign. It monitors for spearphishing artifacts (lure documents and attachments), execution of specific malware and drop artifacts, the use of LOLBins by Office applications, unauthorized remote access via AnyDesk, Telegram-based C2 communication, and persistence mechanisms such as registry run keys and specific file extensions (.wdlp).
This rule detects potential reflective code injection or in-memory loading (fileless) where a DLL or PE image is loaded by mshta.exe or powershell.exe, but the module load event lacks a valid file path on disk (or indicates a device path). This behavior is often associated with the execution of malicious payloads such as the Amatera loader, where payloads are executed directly in memory to evade file-based security detections.
Detects the execution of the Windows FTP client (ftp.exe) initiated by command-line interpreters such as cmd.exe, powershell.exe, or wscript.exe, specifically when utilizing the '-s:' flag. This flag is commonly used to provide a text file containing FTP commands, which is a frequent technique for automated file transfers or exfiltration during post-exploitation activities.
This rule detects inbound HTTP GET requests to a specific IP address (103.86.86.244) requesting a file named 'deploy.ps1'. This behavior is characteristic of adversaries using PowerShell one-liners (cradles) like 'irm' (Invoke-RestMethod) or 'iex' (Invoke-Expression) to fetch and execute malicious scripts directly from a remote C2 infrastructure.
Detects instances where Microsoft Outlook (OUTLOOK.EXE) initiates common living-off-the-land (LotL) binaries that are often abused by malicious attachments or macros to execute secondary commands, such as PowerShell, command prompt, or script host engines.
Detects execution and usage of the DSInternals PowerShell module. Which can be used to perform what might be considered as suspicious activity such as dumping DPAPI backup keys or manipulating NTDS.DIT files.
The DSInternals PowerShell Module exposes several internal features of Active Directory and Azure Active Directory. These include FIDO2 and NGC key auditing, offline ntds.dit file manipulation, password auditing, DC recovery from IFM backups and password hash calculation.
The DSInternals PowerShell Module exposes several internal features of Active Directory and Azure Active Directory. These include FIDO2 and NGC key auditing, offline ntds.dit file manipulation, password auditing, DC recovery from IFM backups and password hash calculation.
Detects the execution of PowerShell with suspicious command-line arguments (hidden window, encoded commands using char arrays, and iex) that subsequently initiates multiple or long-running network connections. This behavior is indicative of a remote access trojan, beaconing, or fileless malware downloading additional payloads.
Detects execution of PowerShell commands that use obfuscated [char[]] hex arrays in conjunction with 'iex' (Invoke-Expression) to run code in memory. This pattern is commonly used by loaders like SynkLoader (cleaner.ps1) to execute scripts while avoiding disk artifacts.
Detects the use of PowerShell (Invoke-WebRequest or Invoke-RestMethod) to download files to the AppData directory, followed by the execution of a file using a 'token-raw' argument. This pattern is often associated with malicious payload delivery and execution.
Detects instances where common web server applications (e.g., Apache, Tomcat, IIS, Nginx) or Java runtime environments spawn suspicious child processes like command shells (cmd.exe, powershell.exe, sh, bash) or network utilities (wget, curl). This behavior often indicates exploitation of a web vulnerability, such as Remote Code Execution (RCE), allowing an adversary to execute commands or download further malicious payloads.
Detects instances where Adobe Acrobat or Adobe Reader processes initiate suspicious child processes, such as common interpreters (PowerShell, CMD, WScript, CScript) or binaries (rundll32, browser executables) often used in malicious document-based attacks to achieve initial code execution.
Detects instances where Adobe Acrobat or Adobe Reader processes initiate suspicious child processes, such as common interpreters (PowerShell, CMD, WScript, CScript) or binaries (rundll32, browser executables) often used in malicious document-based attacks to achieve initial code execution.
Detects instances where a Java process spawns a shell (cmd.exe, powershell.exe, sh, or bash) that executes suspicious commands often associated with remote code execution (RCE) patterns like those seen in Log4j exploitation. The rule excludes common Java-based build tools to reduce noise.
Detects instances where the SQL Server process (sqlservr.exe) initiates a child process that is a known command-line tool, script interpreter, or utility often used in living-off-the-land attacks, or when a child process is spawned from suspicious directory paths such as AppData, Temp, or Windows\Temp.
This rule detects potential reflective code injection or in-memory loading (fileless) where a DLL or PE image is loaded by mshta.exe or powershell.exe, but the module load event lacks a valid file path on disk (or indicates a device path). This behavior is often associated with the execution of malicious payloads such as the Amatera loader, where payloads are executed directly in memory to evade file-based security detections.
Detects the execution of PowerShell commands that utilize base64-encoded strings, window style arguments for obfuscation, and subsequent decoding to reveal suspicious indicators such as network downloading commands or archive manipulation, indicative of potential fileless malware staging.
Detects a suspicious sequence of activities where PowerShell downloads or extracts specific zip files (node.zip, build.zip) to staging directories, followed by the execution of associated binaries like node.exe, winpty-agent.exe, or winpty.dll from those same locations. This behavior is indicative of an adversary staging and executing tooling within temporary user directories.
Detects Node.js or related helper processes executing shell commands (cmd.exe, powershell.exe) or other processes where the execution involves the 'withCreateProcessUser' argument. This often indicates attempts to bypass execution restrictions or run malicious payloads by utilizing Node.js as an execution proxy within unconventional or temporary directories.
Detects instances where OpenVPN service binaries (openvpn.exe or openvpnserv.exe) spawn command-line interpreters (cmd.exe or powershell.exe) with suspicious command-line characters or potentially unbalanced quotes. This behavior may indicate an attempt to leverage OpenVPN for code execution or persistence, often seen in environments where VPN configurations are manipulated to run arbitrary scripts.
Detects instances where OpenVPN service binaries (openvpn.exe or openvpnserv.exe) spawn command-line interpreters (cmd.exe or powershell.exe) with suspicious command-line characters or potentially unbalanced quotes. This behavior may indicate an attempt to leverage OpenVPN for code execution or persistence, often seen in environments where VPN configurations are manipulated to run arbitrary scripts.
Detects instances where OpenVPN service binaries (openvpn.exe or openvpnserv.exe) spawn command-line interpreters (cmd.exe or powershell.exe) with suspicious command-line characters or potentially unbalanced quotes. This behavior may indicate an attempt to leverage OpenVPN for code execution or persistence, often seen in environments where VPN configurations are manipulated to run arbitrary scripts.
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