Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This query helps getting GeoIP information of emails SenderIPv4 addresses.
The query checks process command lines arguments and parent/child combinations to find machines where there have been.
Attempts to exploit the Protocol Handler Vulnerability of Electron framework CVE-2018-1000006.
Electron is a common framework used by many popular applications (e.g. Skype, Teams, Slack, VSCode) which expose protocol handlers.
Which can trigger a remote code execution vulnerability via a browser vector (e.g. Chrome, Internet Explorer, Edge).
CVE: CVE-2018-1000006.
Read more here:.
Https://electronjs.org/blog/protocol-handler-fix.
Https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000006.
Https://www.exploit-db.com/exploits/43899.
Https://hackernoon.com/exploiting-electron-rce-in-exodus-wallet-d9e6db13c374.
Tags: #exploit #CVE-2018-1000006 #Electron.
Attempts to exploit the Protocol Handler Vulnerability of Electron framework CVE-2018-1000006.
Electron is a common framework used by many popular applications (e.g. Skype, Teams, Slack, VSCode) which expose protocol handlers.
Which can trigger a remote code execution vulnerability via a browser vector (e.g. Chrome, Internet Explorer, Edge).
CVE: CVE-2018-1000006.
Read more here:.
Https://electronjs.org/blog/protocol-handler-fix.
Https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000006.
Https://www.exploit-db.com/exploits/43899.
Https://hackernoon.com/exploiting-electron-rce-in-exodus-wallet-d9e6db13c374.
Tags: #exploit #CVE-2018-1000006 #Electron.
The analytic detects a spike in the number of API calls made to cloud infrastructure by a user. It leverages cloud infrastructure logs and compares the current API call volume against a baseline probability density function to identify anomalies. This activity is significant because an unusual increase in API calls can indicate potential misuse or compromise of cloud resources. If confirmed malicious, this could lead to unauthorized access, data exfiltration, or disruption of cloud services, posing a significant risk to the organization's cloud environment.
Total Controlled Folder Access events.
Total Controlled Folder Access events.
This query was originally published in the threat analytics report, "Exchange Server zero-days exploited in the wild".
In early March 2021, Microsoft released patches for four different zero-day vulnerabilities affecting Microsoft Exchange Server. The vulnerabilities were being used in a coordinated attack. For more information on the vulnerabilities, visit the following links:
1. CVE-2021-26855
2. CVE-2021-26857
3. CVE-2021-26858
4. CVE-2021-27065
The following query surfaces when unusual subprocesses were launched by MWorkerProcess, the Exchange Unified Messaging service. This might indicate exploitation of CVE-2021-26857 to run arbitrary code.
More queries related to this threat can be found under the See also section of this page.
Reference - https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server/
In early March 2021, Microsoft released patches for four different zero-day vulnerabilities affecting Microsoft Exchange Server. The vulnerabilities were being used in a coordinated attack. For more information on the vulnerabilities, visit the following links:
1. CVE-2021-26855
2. CVE-2021-26857
3. CVE-2021-26858
4. CVE-2021-27065
The following query surfaces when unusual subprocesses were launched by MWorkerProcess, the Exchange Unified Messaging service. This might indicate exploitation of CVE-2021-26857 to run arbitrary code.
More queries related to this threat can be found under the See also section of this page.
Reference - https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server/
'This query looks for new processes being spawned by the Exchange UM service where that process has not previously been observed before.
Reference: https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/'
Reference: https://www.microsoft.com/security/blog/2021/03/02/hafnium-targeting-exchange-servers/'
Show usb mounted and files copied
The analytic detects cloud API calls executed by user roles that have not previously run these commands. It leverages the Change data model in Splunk to identify commands executed by users with the user_type of AssumedRole and a status of success. This activity is significant because new commands from different user roles can indicate potential malicious activity or unauthorized actions. If confirmed malicious, this behavior could lead to unauthorized access, data breaches, or other damaging outcomes by exploiting new or unmonitored commands within the cloud environment.
This query helps reviewing Phish detections done by some of the most frequent detection technologies in the last 7 days
This rule detects unusually high video latency in Zoom sessions. Elevated latency, particularly above 300ms, can be an indicator of suspicious activity such as Remote Employment Fraud (REF), where threat actors might be operating from geographically distant locations or using compromised network infrastructure, leading to poor connection quality. The rule extracts and analyzes average and overall video latency from Zoom Quality of Service (QoS) logs for participants.
This query helps reviewing malware detections by detection methods
This analytic detects AWS console login events by users who have not previously logged into the AWS console. It uses AWS CloudTrail events and compares them against a baseline of known users. A new user logging into the AWS console could indicate the creation of new accounts or potential unauthorized access, which could lead to unauthorized access to AWS resources, data exfiltration, or further exploitation within the cloud environment.
The following analytic detects a spike in the number of API calls made to cloud security groups by a user. It leverages data from the Change data model, focusing on successful firewall-related changes. This activity is significant because an abnormal increase in security group API calls can indicate potential malicious activity, such as unauthorized access or configuration changes. If confirmed malicious, this could allow an attacker to manipulate security group settings, potentially exposing sensitive resources or disrupting network security controls.
This query helps reviewing top submitters of user submissions
The following analytic identifies the creation of cloud compute instances by users who have not previously created them. It leverages data from the Change data model, focusing on 'create' actions by users, and cross-references with a baseline of known user activities. This activity is significant as it may indicate unauthorized access or misuse of cloud resources by new or compromised accounts. If confirmed malicious, attackers could deploy unauthorized compute instances, leading to potential data exfiltration, increased costs, or further exploitation within the cloud environment.
The analytic identifies cloud instances being modified by users who have not previously modified them. This activity is significant because it can indicate unauthorized or suspicious changes by potentially compromised or malicious users. If confirmed malicious, this could lead to unauthorized access, configuration changes, or potential disruption of cloud services, posing a significant risk to the organization's cloud infrastructure.
Detects potential command execution via webshell in SAP NetViewer through JSP files with 'cmd' or similar parameters. This rule is designed to identify exploitation of vulnerabilities like CVE-2025-31324, which allows remote code execution via a webshell by looking for specific URI patterns and query parameters indicative of command execution attempts, including common Linux commands and base64 encoded commands.
The analytic identifies DNS queries to domains associated with the 3CX supply chain attack. This activity is significant because it can indicate a potential compromise stemming from the 3CX supply chain attack, which is known for distributing malicious software through trusted updates. If confirmed malicious, this activity could allow attackers to establish a foothold in the network, exfiltrate sensitive data, or further propagate malware, leading to extensive damage and data breaches.
This query helps reviewing admin reported email submissions
The analytic identifies potential exploitation attempts on a PaperCut NG server by analyzing its debug log data. It detects unauthorized or suspicious access attempts from public IP addresses and searches for specific URIs associated with known exploits. The detection leverages regex to parse unstructured log data, focusing on admin login activities. This activity is significant as it can indicate an active exploitation attempt on the server. If confirmed malicious, attackers could gain unauthorized access, potentially leading to data breaches or further compromise of the server.
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