SigmaHQ Detections
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6,797 detections
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This rule detects the execution of 'ssh.exe' with command-line arguments indicating RDP port forwarding (tunneling). Specifically, it looks for the presence of ':3389' in the command line, which is the default port for RDP. This activity can be used by adversaries to establish a tunnel for remote access, bypassing network restrictions and potentially exfiltrating data.
Detects suspicious child processes spawned by WmiPrvSE.exe, which is often abused by adversaries for execution and defense evasion. The rule specifically looks for common Living Off The Land Binaries (LOLBINs) and scripting interpreters being launched by WmiPrvSE, including certutil, cscript, mshta, msiexec, regsvr32, rundll32, verclsid, wscript, and cmd.exe with specific command-line arguments related to scripting or LOLBINs.
Detects exploitation attempts against Citrix Netscaler, Application Delivery Controller, and Citrix Gateway devices targeting CVE-2019-19781. The rule looks for specific URI query patterns indicative of directory traversal or direct access to vulnerable scripts.
This rule detects command-line patterns associated with potential Russian APT credential theft activities, specifically targeting Active Directory data. It looks for the use of `xcopy` to copy the `sysvol` directory, which can contain sensitive information, and `adexplorer` to create a snapshot of Active Directory data, typically saved as a `.snp` file in a user's downloads directory. These actions are indicative of adversaries attempting to exfiltrate or analyze Active Directory credentials and configuration.
Detects various process execution behaviors associated with the Lazarus Group, including attempts to dump SAM registry hive, network connection enumeration using netstat, network share discovery patterns, persistence mechanisms involving common program data directories, and rundll32 execution with specific file extensions.
This rule detects the creation of a new process where the parent process is 'svchost.exe' with the command line containing '-k RPCSS'. This specific parent process signature is associated with the Remote Procedure Call (RPC) service. The rule aims to identify unusual child processes spawned by the RPC service, which could indicate an exploitation attempt of vulnerabilities like CVE-2022-26809. It's considered a 'long shot' detection, meaning it targets anomalous behavior rather than a direct exploit signature.
Detects potential command and control (C2) beaconing activity to domains identified as being used in the 'Operation Triangulation' attacks, which targeted iOS devices. These domains were revealed by Kaspersky and the FSB.
Detects the creation of files with a specific naming pattern '/mail/tmp/[a-zA-Z0-9]{3}[0-9]{3}.tar.gz' which has been observed to be used by the threat actor UNC4841 for staging and exfiltration of email-related data.
Detects the creation of the default named pipe '\PSEXESVC' which is commonly used by PsExec for remote service execution. This pipe is created when PsExec attempts to establish a service on a remote system to execute commands.
Identifies when an Azure Kubernetes CronJob or Job is created or modified in Azure Cloud. Adversaries may use Kubernetes CronJobs or Jobs for scheduling execution of malicious code that would run as a container in the cluster, establishing persistence or executing malicious tasks.
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