Steven Lim
@KQLWizardKQLWizard.comTrusted contributorCompletionist
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This rule detects network connections to domains that appear to be dynamically generated IPv6 reverse DNS entries. These types of domains (e.g., 'xxxxxxxxxx.ip6.arpa') are often used in command and control (C2) communications or for exfiltration by malware to evade traditional domain-based detection. The regex specifically looks for a 10-character alphanumeric string followed by '.ip6.arpa'.
This rule detects the execution of a 'git clone' command to download the 'qwibitai/nanoclaw' repository, specifically on devices where a 'node' or 'node.exe' process associated with 'claude' is also observed. This could indicate an adversary installing tools or malicious code on a system potentially related to a 'claude' application or service.
This rule detects the creation of a registry key named 'MonitoringService' under 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run'. This registry key is commonly used by adversaries to establish persistence, ensuring that a malicious program or script executes automatically each time a user logs on to the system.
This rule detects the execution of `nslookup` and `findstr` together in a command line, specifically looking for non-private IP addresses. This combination can indicate an adversary attempting to discover remote systems or exfiltrate data by encoding it within DNS queries, often seen in DNS tunneling or data staging activities.
https://www.bleepingcomputer.com/news/security/new-clickfix-attack-abuses-nslookup-to-retrieve-powershell-payload-via-dns/
This rule detects inbound network connections to Active Directory Web Services (ADWS) on port 9389, followed by either LDAP query events (Event ID 1644) or operations on Active Directory objects (Event ID 4662) originating from the same device. This combination of events can indicate reconnaissance or malicious activity targeting Active Directory, such as attempts to enumerate accounts or groups, or to modify AD objects.
This rule detects Windows Admin Center (WAC) creating a listening connection on its default port (6516) on internet-facing devices, specifically when the WAC version is not '2.6.4'. This could indicate an unpatched or vulnerable version of WAC exposed to the internet, potentially making it susceptible to exploitation.
This rule detects the execution of 'notepad.exe' specifically when it is launched from the WindowsApps directory (excluding version '11.2510') and its command line arguments include the string '.md'. This combination suggests an attempt to open or process Markdown files using a specific, potentially non-standard, version of Notepad. This could indicate unusual user activity, a misconfigured application, or potentially malicious activity involving Markdown files, such as data exfiltration or execution of embedded content.
https://www.kaseya.com/blog/dkim-replay-attacks-apple-paypal-invoice-abuse/
This rule detects the execution of 'node' with 'install' and 'openclaw' in its command line, or any process command line containing 'https://openclaw.ai/install.'. This indicates an attempt to install or execute the 'openclaw' tool, potentially for malicious purposes or unauthorized software deployment.
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