Ibrahim Saud
@tektrixIndiaCompletionist
2 followers18,457 downloads7,056 copies47 likes38,430 views
11,679 detections
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Detects user account sign-in attempts originating from a country not observed in the previous 30 days, or from an ISP flagged as a VPN, proxy, or hosting/cloud provider. This behavior is consistent with an adversary utilizing stolen credentials or session tokens through anonymity infrastructure to bypass conditional access policies.
This rule detects the creation of a file within the SysWOW64 directory followed by an immediate modification or creation of a Windows Run registry key within a 10-minute window. This behavior is indicative of a persistence mechanism where a malicious file is dropped to a system directory and registered for execution at system startup or user logon.
Detects execution of the CHOSEN BRICK implant (process names smdqservice.exe or winappx.exe) initiating a network connection to Telegram infrastructure (C2) followed by a network connection to a cloud object-storage provider (vultrobjects.com, storjshare.io, or backblazeb2.com) for data exfiltration within a 30-minute window.
This rule detects artifacts and behaviors associated with the WaterPlum/Contagious Interview (also known as DeceptiveDevelopment) malware suite, including BeaverTail, InvisibleFerret, and related payloads. The rule specifically targets the presence of embedded family-name strings, as well as the execution of suspicious npm package installations triggered by VS Code task automation (tasks.json) or trust prompts, common in fake technical interview attack scenarios.
This rule detects inbound Microsoft Teams calls originating from external or federated tenants where the caller's display name attempts to mimic internal IT support, help desk, or departmental roles. This behavior is a hallmark of vishing (voice phishing) attacks, often used as a secondary phase in social engineering campaigns following initial contact via email.
This rule detects potentially malicious Microsoft 365 sign-in events characterized by the use of residential proxy network providers commonly associated with session hijacking activities. It specifically flags sessions that were allowed without a Multi-Factor Authentication (MFA) challenge, suggesting the use of an already authenticated stolen session token.
This rule monitors for the installation of specific known-malicious or suspicious NPM packages that are commonly used in supply chain attacks. It identifies the execution of npm (or node) commands to install or add packages explicitly listed as malicious by security research, which may indicate a supply chain compromise or an attempt to introduce unauthorized code into the development environment.
Detects potential Adversary-in-the-Middle (AiTM) phishing activity where a user successfully authenticates to Microsoft 365 with MFA, followed shortly by a session from a different IP address reusing the same session ID without a repeated MFA challenge.
Detects anomalous, high-volume activity in cloud-based services such as SharePoint, OneDrive, and Exchange, specifically tracking file access, downloads, and mailbox exports. This behavior may indicate bulk data collection, unauthorized exfiltration, or malicious data staging by a compromised account.
Detects instances where a user grants high-privilege permissions (Mail.Read, Files.ReadWrite.All, offline_access) to an OAuth application within 24 hours of a risky sign-in event. This pattern is commonly observed in AiTM (Adversary-in-the-Middle) or consent-phishing attacks designed to establish persistent access to cloud resources.
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