Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
15 detections
Filters
Last updated
All Time
Detection languages
12
2
1
Contributors
12
2
1
Categories
9
5
4
3
3
Platforms
15
Products / Services
11
6
6
3
3
MITRE Techniques
18,114
15,634
12,576
8,388
6,215
This rule detects the launch of a process where its command line contains references to 'RawWNPF' or '\device\rawwnpf'. This pattern is often associated with malicious activity, specifically related to the 'Fishmonger's Arsenal' campaign and the 'SprySocks' malware, which utilize RawWNPF for inter-process communication or other low-level operations. The rule focuses on capturing the principal and target context for further correlation and investigation.
This rule detects the launch of a process where its command line contains references to 'RawWNPF' or '\device\rawwnpf'. This pattern is often associated with malicious activity, specifically related to the 'Fishmonger's Arsenal' campaign and the 'SprySocks' malware, which utilize RawWNPF for inter-process communication or other low-level operations. The rule focuses on capturing the principal and target context for further correlation and investigation.
The analytic identifies a high frequency of file deletions by monitoring Sysmon EventCodes 23 and 26 for specific file extensions. This detection leverages Sysmon logs to track deleted target filenames, process names, and process IDs. Such activity is significant as it often indicates ransomware behavior, where files are encrypted and the originals are deleted. If confirmed malicious, this activity could lead to extensive data loss and operational disruption, as ransomware can render critical files inaccessible, demanding a ransom for their recovery.
The following analytic detects the use of the EncodedCommand parameter in PowerShell processes. It leverages Endpoint Detection and Response (EDR) data to identify variations of the EncodedCommand parameter, including shortened forms and different command switch types. This activity is significant because adversaries often use encoded commands to obfuscate malicious scripts, making detection harder. If confirmed malicious, this behavior could allow attackers to execute hidden code, potentially leading to unauthorized access, privilege escalation, or persistent threats within the environment. Review parallel events to determine legitimacy and tune based on known administrative scripts.
The following analytic detects suspicious raw access reads to the drive containing the Master Boot Record (MBR). It leverages Sysmon EventCode 9 to identify processes attempting to read or write to the MBR sector, excluding legitimate system processes. This activity is significant because adversaries often target the MBR to wipe, encrypt, or overwrite it as part of their impact payload. If confirmed malicious, this could lead to system instability, data loss, or a complete system compromise, severely impacting the organization's operations.
This analytic detects suspicious PowerShell commands that attempt to delete the Windows Defender directory. It specifically looks for PowerShell Script Block Logging (EventCode 4104) entries containing "rmdir" and targeting paths related to "\Microsoft\Windows Defender". Such activity is critical as it suggests an adversary is trying to disable or corrupt Windows Defender, which is a key security component. If successful, this could allow an attacker to bypass endpoint protection and facilitate further malicious activities without detection.
The following analytic identifies suspicious command-line parameters associated with the use of Impacket's smbexec.py for lateral movement. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on specific command-line patterns indicative of Impacket tool usage. This activity is significant as both Red Teams and adversaries use Impacket for remote code execution and lateral movement. If confirmed malicious, this activity could allow attackers to execute commands on remote endpoints, potentially leading to unauthorized access, data exfiltration, or further compromise of the network.
The following analytic detects the use of Impacket's `wmiexec.py` tool for lateral movement by identifying specific command-line parameters. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on processes spawned by `wmiprvse.exe` with command-line patterns indicative of Impacket usage. This activity is significant as Impacket tools are commonly used by adversaries for remote code execution and lateral movement within a network. If confirmed malicious, this could allow attackers to execute arbitrary commands on remote systems, potentially leading to further compromise and data exfiltration.
The following analytic detects excessive file deletion events in the Windows Defender folder. It leverages Sysmon EventCodes 23 and 26 to identify processes deleting multiple files within this directory. This behavior is significant as it may indicate an attempt to corrupt or disable Windows Defender, a key security component. If confirmed malicious, this activity could allow an attacker to disable endpoint protection, facilitating further malicious actions without detection.
This analytic identifies a process attempting to delete its own executable file using `cmd.exe` and the `del` command. This behavior is often associated with defense evasion techniques employed by malware, such as Clop ransomware, to remove its executable file after execution or under specific conditions. Detecting such activity is crucial for identifying malicious actors trying to evade detection and complicate incident response efforts.
This analytic detects attempts to stop security-related services on an endpoint, which may indicate malicious activity. It leverages data from Endpoint Detection and Response (EDR) agents, specifically searching for processes involving the "sc.exe" or "net.exe" command with the "stop" parameter or the PowerShell "Stop-Service" cmdlet. This activity is significant because disabling security services can undermine the organization's security posture, potentially leading to unauthorized access, data exfiltration, or further attacks like malware installation or privilege escalation. If confirmed malicious, this behavior could compromise the endpoint and the entire network, necessitating immediate investigation and response.
The following analytic identifies the execution of commonly used NirSoft utilities on Windows systems. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution details such as process name, parent process, and command-line arguments. This activity is significant for a SOC because NirSoft utilities, while legitimate, can be used by adversaries for malicious purposes like credential theft or system reconnaissance. If confirmed malicious, this activity could lead to unauthorized access, data exfiltration, or further system compromise.
The following analytic detects the execution of native .NET binaries from non-standard directories within the Windows operating system. It leverages Endpoint Detection and Response (EDR) telemetry, comparing process names and original file names against a predefined lookup. This activity is significant because adversaries may move .NET binaries to unconventional paths to evade detection and execute malicious code. If confirmed malicious, this behavior could allow attackers to execute arbitrary code, escalate privileges, or maintain persistence within the environment, posing a significant security risk.
This analytic identifies a process making a DNS query to Discord, excluding legitimate Discord application paths. It leverages Sysmon logs with Event ID 22 to detect DNS queries containing "discord" in the QueryName field. This activity is significant because Discord can be abused by adversaries to host and download malicious files, as seen in the WhisperGate campaign. If confirmed malicious, this could indicate malware attempting to download additional payloads from Discord, potentially leading to further code execution and compromise of the affected system.
Detects the execution of the AdvancedRun utility, which can be used to launch applications with different user permissions, including SYSTEM, or with modified environment variables. This utility is often used for legitimate administrative tasks but can also be leveraged by adversaries for privilege escalation or defense evasion, particularly by running processes with hidden windows.
