Splunk Security
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2,496 detections
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The analytic detects the execution of a Unix shell command designed to wipe root directories on a Linux host. It specifically looks for the 'rm' command with force recursive deletion ('-rf') and the '--no-preserve-root' option. This activity indicates potential data destruction attempts, often associated with malware like Awfulshred. If confirmed malicious, this behavior could lead to severe data loss, system instability, and compromised integrity of the affected Linux host. Immediate investigation and response are crucial to mitigate potential damage.
The analytic detects the execution of the 'csvtool' command with 'sudo' privileges, which can allow a user to run system commands as root. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs that include command-line details. This activity is significant because it indicates a potential privilege escalation attempt, where a user could gain unauthorized root access. If confirmed malicious, this could lead to full system compromise, allowing an attacker to execute arbitrary commands, escalate privileges, and maintain persistent access.
The analytic detects the execution of the GNU Debugger (GDB) with specific flags (`-nx`, `-ex`, and `sudo`) that indicate an attempt to escalate privileges on a Linux system. This activity can allow a user to execute system commands as root, potentially leading to a root shell and full system compromise.
The following analytic detects the execution of the RubyGems utility with elevated privileges, specifically when it is used to run system commands as root. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on command-line executions that include "gem open -e" and "sudo". This activity is significant because it indicates a potential privilege escalation attempt, allowing a user to execute commands as the root user. If confirmed malicious, this could lead to full system compromise, enabling the attacker to gain root access and execute arbitrary commands with elevated privileges.
The analytic detects the execution of OpenVPN with elevated privileges, specifically when combined with the `--dev`, `--script-security`, `--up`, and `sudo` options. This activity is significant because it indicates a potential privilege escalation attempt, allowing a user to execute system commands as root. If confirmed malicious, this could lead to full system compromise, enabling an attacker to gain root access and execute arbitrary commands with elevated privileges.
The following analytic detects the execution of PHP commands with elevated privileges on a Linux system. It identifies instances where PHP is used in conjunction with 'sudo' and 'system' commands, indicating an attempt to run system commands as the root user. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process command-line arguments. This activity is significant because it can indicate an attempt to escalate privileges, potentially leading to full root access. If confirmed malicious, this could allow an attacker to execute arbitrary commands with root privileges, compromising the entire system.
The following analytic detects potential tampering with cronjob files on a Linux system by identifying 'echo' commands that append code to existing cronjob files. It leverages logs from Endpoint Detection and Response (EDR) agents, focusing on process names, parent processes, and command-line executions. This activity is significant because adversaries often use it for persistence or privilege escalation. If confirmed malicious, this could allow attackers to execute unauthorized code automatically, leading to system compromises and unauthorized data access, thereby impacting business operations and data integrity.
The following analytic identifies the creation of suspicious .aspx files in specific directories associated with Exchange exploitation by the HAFNIUM group and the ProxyShell vulnerability. It detects this activity by monitoring the MSExchangeMailboxReplication.exe process, which typically does not write .aspx files. This behavior is significant as it may indicate an active exploitation attempt on Exchange servers. If confirmed malicious, attackers could gain unauthorized access, execute arbitrary code, or maintain persistence within the environment. Immediate investigation and remediation are crucial to prevent further compromise.
The following analytic detects the execution of the `route.exe` Windows application, commonly used for network discovery. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process creation events. This activity is significant because adversaries often use `route.exe` to map network routes and identify potential targets within a network. If confirmed malicious, this behavior could allow attackers to gain insights into network topology, facilitating lateral movement and further exploitation. Note that false positives may occur due to legitimate administrative tasks or automated scripts.
The following analytic identifies the rapid execution of processes used for system network configuration discovery on an endpoint. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process GUIDs, names, parent processes, and command-line executions. This activity can be significant as it may indicate an attacker attempting to map the network, which is a common precursor to lateral movement or further exploitation. If confirmed malicious, this behavior could allow an attacker to gain insights into the network topology, identify critical systems, and plan subsequent attacks, potentially leading to data exfiltration or system compromise.
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