SigmaHQ Detections
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6,797 detections
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Detects network access to the 'protected_storage' service, specifically targeting the IPC$ share. This activity is often associated with attempts to extract DPAPI domain backup keys from Domain Controllers, a technique used for credential access and lateral movement.
Detects inbound network connections to ports 5985 or 5986, which are commonly used for PowerShell Remoting (WinRM). This rule specifically looks for EventID 5156 (Windows Filtering Platform Connection) with a LayerRTID of 44, indicating an inbound connection.
Detects reconnaissance activity involving attempts to enumerate domain administrator accounts and domain groups. Specifically, it looks for Event ID 4661 (An operation was performed on an object) with an AccessMask of '0x2d' (which indicates a read access attempt) on SAM_USER or SAM_GROUP objects whose ObjectName corresponds to well-known SIDs for the built-in Administrator account (-500) or Domain Admins group (-512) within a domain (S-1-5-21- prefix). This activity is often associated with adversaries using commands like 'net user administrator /domain' or 'net group domain admins /domain' to discover privileged accounts.
Detects modifications to the Windows Defender exclusion registry key. This could indicate a potentially suspicious or even malicious activity by an attacker trying to add a new exclusion in order to bypass security.
This rule detects the creation of a remote thread within the KeePass.exe process. This activity is highly suspicious as it can indicate an attacker attempting to inject malicious code into KeePass to extract sensitive information, such as master passwords or stored credentials. This technique is commonly used by tools like KeeFarce and KeeThief for password dumping from KeePass.
Detects the use of the NPPSpy hacktool by monitoring for the creation of its characteristic output files, 'NPPSpy.txt' or 'NPPSpy.dll'. This tool is known to capture cleartext credentials from users logging into a local system.
Detects process activity patterns indicative of the Sliver C2 framework implants. Specifically, it looks for command-line arguments used by Sliver to execute PowerShell with specific encoding settings.
Detects the use of 'netsh.exe' commands to disable the Windows firewall. This includes commands targeting both the legacy 'firewall' context and the 'advfirewall' (Windows Defender Firewall with Advanced Security) context, specifically looking for parameters that set the firewall state to disabled or off.
Detects PowerShell command line patterns in combination with encoded commands that often appear in malware infection chains. This rule specifically looks for PowerShell or pwsh executable names combined with common encoded command flags (-e, -enc, etc.) and specific Base64 encoded strings frequently seen in malicious payloads.
This rule detects suspicious child processes spawned by the VMware Tools daemon (vmtoolsd.exe). Adversaries may leverage vmtoolsd.exe to establish persistence by executing various scripting and command-line interpreters such as cmd.exe, cscript.exe, mshta.exe, powershell.exe, pwsh.exe, regsvr32.exe, rundll32.exe, and wscript.exe. The rule specifically filters out legitimate VMware Tools scripts related to power management to reduce false positives.
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