Splunk Security
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2,496 detections
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The analytic detects the execution of `powershell.exe` with command-line arguments that query for domain groups using `Get-DomainGroup`. This activity is often associated with PowerView, a tool used by adversaries for domain enumeration and situational awareness. Detecting this can help identify attackers gaining insights into domain group structures, which could aid in further exploitation and privilege escalation.
The analytic detects `rundll32.exe` loading a DLL export function by ordinal value. This behavior is significant because adversaries may use `rundll32.exe` to execute malicious code while evading security tools that do not monitor this process. If confirmed malicious, this activity could allow attackers to execute arbitrary code, potentially leading to system compromise, privilege escalation, or persistent access within the environment.
The analytic detects the use of `fltMC.exe` to unload the Sysmon driver, which stops Sysmon from collecting data. It leverages Endpoint Detection and Response (EDR) logs, focusing on process names and command-line executions. This activity is significant because disabling Sysmon can blind security monitoring, allowing malicious actions to go undetected. If confirmed malicious, this could enable attackers to execute further attacks without being logged, leading to potential data breaches, privilege escalation, or persistent access within the environment.
The following analytic detects the execution of wbadmin.exe with flags that delete backup files, specifically targeting catalog or system state backups. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. This activity is significant because it is commonly used by ransomware to prevent recovery by deleting system backups. If confirmed malicious, this action could severely hinder recovery efforts, leading to prolonged downtime and potential data loss.
The analytic detects the `wermgr.exe` process creating an executable file. This behavior is unusual because `wermgr.exe` is typically associated with error reporting, not file creation. Such activity is significant as it may indicate TrickBot malware, which injects code into `wermgr.exe` to execute malicious actions like downloading additional payloads. If confirmed malicious, this could lead to further malware infections, data exfiltration, or system compromise.
The following analytic detects the use of net.exe or net1.exe command-line to delete a user account on a system. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process and command-line execution logs. This activity is significant as it may indicate an attempt to impair user accounts or cover tracks during lateral movement. If confirmed malicious, this could lead to unauthorized access removal, disruption of legitimate user activities, or concealment of adversarial actions, complicating incident response and forensic investigations.
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