Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

84 detections

The following analytic detects the execution of the `Get-WMIObject Win32_Group` command using PowerShell Script Block Logging (EventCode=4104). This method captures the full command sent to PowerShell, allowing for detailed analysis. Identifying group information on an endpoint is not inherently malicious but can be suspicious based on context such as time, endpoint, and user. This activity is significant as it may indicate reconnaissance efforts by an attacker. If confirmed malicious, it could lead to further enumeration and potential lateral movement within the network.
Splunk Security@SplunkSecurity
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Splunk Security Content
16 days ago
001
The following analytic identifies the execution of `net.exe` with command-line arguments used to query global, local and domain groups. It leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. This activity is significant as it indicates potential reconnaissance efforts by adversaries to enumerate local or domain groups, which is a common step in Active Directory or privileged accounts discovery. If confirmed malicious, this behavior could allow attackers to gain insights into the domain structure, aiding in further attacks such as privilege escalation or lateral movement.
Splunk Security@SplunkSecurity
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Splunk Security Content
16 days ago
001
The following analytic identifies the use of `wmic.exe` to enumerate local groups on an endpoint. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process execution logs, including command-line details. Monitoring this activity is significant as it can indicate reconnaissance efforts by an attacker to understand group memberships, which could be a precursor to privilege escalation or lateral movement. If confirmed malicious, this activity could allow an attacker to map out privileged groups, aiding in further exploitation and persistence within the environment.
Splunk Security@SplunkSecurity
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Splunk Security Content
16 days ago
001
The following analytic detects the use of the `Get-WMIObject Win32_Group` command executed via PowerShell to enumerate local groups on an endpoint. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line executions. Identifying local groups can be a precursor to privilege escalation or lateral movement. If confirmed malicious, this activity could allow an attacker to map out group memberships, aiding in further exploitation or unauthorized access to sensitive resources.
Splunk Security@SplunkSecurity
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Splunk Security Content
16 days ago
000
The following analytic identifies the use of the `get-localgroup` command executed via PowerShell or cmd.exe to enumerate local groups on an endpoint. This detection leverages data from Endpoint Detection and Response (EDR) agents, focusing on process names and command-line arguments. Monitoring this activity is significant as it may indicate an attacker attempting to gather information about local group memberships, which can be a precursor to privilege escalation. If confirmed malicious, this activity could allow an attacker to identify and target privileged accounts, potentially leading to unauthorized access and control over the system.
Splunk Security@SplunkSecurity
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Splunk Security Content
16 days ago
000
The following analytic detects the execution of the PowerShell cmdlet `get-localgroup` using PowerShell Script Block Logging (EventCode=4104). This method captures the full command sent to PowerShell, providing detailed visibility into script execution. Monitoring this activity is significant as it can indicate an attempt to enumerate local groups, which may be a precursor to privilege escalation or lateral movement. If confirmed malicious, an attacker could gain insights into group memberships, potentially leading to unauthorized access or privilege abuse. Review parallel processes and the entire script block for comprehensive analysis.
Splunk Security@SplunkSecurity
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Splunk Security Content
16 days ago
000
This rule detects instances where a process matching a known sideload-vulnerable binary (such as werfaultsecure or wuauclt) spawns a PowerShell process that executes commands commonly used for Active Directory reconnaissance and system information discovery. This behavior is indicative of post-compromise activity, specifically reconnaissance phases performed by malware loaders like Lorem Ipsum.
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Ibrahim Saud@tektrix
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Detections.ai Community
26 days ago
002
Detects usage of the net1.exe utility to list members of the local 'Administrators' group in various languages. This technique is often used by adversaries for local system discovery during the reconnaissance phase.
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Ibrahim Saud@tektrix
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Detections.ai Community
1 month ago
003
This KQL detects attack used TCP port 4307 for unauthenticated access and replaced public\js\locale.php with a web shell that provided persistent remote access.
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Syed Usfar Wasim@nCD24
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Detections.ai Community
3 months ago
305
This rule detects hosts exhibiting behavior consistent with an active ransomware or destructive attack in progress, by correlating five distinct attack-chain stages within a rolling 24-hour window: environment/AD enumeration, network share discovery, lateral movement via RDP, credential dumping, and backup/recovery destruction.
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Montaser Ismail@M0nt3x
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Detections.ai Community
3 months ago
11121
KQL Query
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Duo Tech@duotech
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Detections.ai Community
3 months ago
308
No description available.
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Duo Tech@duotech
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Detections.ai Community
3 months ago
408
Generic rule content from file: Linux Privilege Escalation via Sudo/Wheel Enumeration and Setuid Ping6 Backdoor
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Duo Tech@duotech
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Detections.ai Community
3 months ago
106
Detects Commandlet names from well-known PowerShell exploitation frameworks
Yamato Security Hayabusa@YamatoSecurityHayabusa
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Yamato Security Hayabusa Rules
4 months ago
1049
Detects common reconnaissance activities using built-in Windows utilities to enumerate domain users, domain groups, and local administrators, as well as LDAP enumeration using dsquery and dsget.
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Ankit Mehta@Secvyn
Bharat Cyber Guardians
4 months ago
103
Detects various privilege escalation and reconnaissance techniques commonly associated with the 'Operation Poisson' campaign, including UAC bypass attempts, local administrator group enumeration, and administrative privilege verification triggered by script interpreters.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
002
Detects the usage of the "Accesschk" utility, an access and privilege audit tool developed by SysInternal and often being abused by attacker to verify process privileges
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SigmaHQ Detections@sigmaHQ
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SigmaHQ
4 months ago
001
Detects the usage of net.exe or net1.exe to enumerate domain users, groups, local administrators, and domain controllers, which is frequently indicative of post-compromise reconnaissance.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
002
Detects common reconnaissance activities using built-in Windows utilities to enumerate domain users, domain groups, and local administrators, as well as LDAP enumeration using dsquery and dsget.
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Ankit Mehta@Secvyn
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Detections.ai Community
4 months ago
001
Detects high-frequency execution of common Windows reconnaissance tools such as net.exe, nltest.exe, and dsquery.exe, often used by attackers for account or domain enumeration. The rule filters out known administrative processes and Microsoft-signed binaries to reduce noise.
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Ibrahim Saud@tektrix
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Detections.ai Community
4 months ago
002
Correlates a successful Fortinet SSL VPN session with nltest, net, Get-AD*, AdFind, ldapsearch, WinRS, or WMIC discovery commands for the same account within forty-five minutes. This behavior can indicate an attacker establishing initial access via VPN and then performing internal reconnaissance.
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Daniel Jeremiah@daniyyell
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Detections.ai Community
4 months ago
10017
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