Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects network traffic indicating the use of Rclone to exfiltrate data to MEGA cloud storage, a technique associated with Akira ransomware campaigns.
This rule detects the suspicious copying of a Chromium-based browser 'Web Data' file (which stores sensitive information like saved passwords, credit cards, or address data) to a temporary file, followed by an outbound network connection to a specific exfiltration endpoint pattern within a 30-minute window.
Detects modifications to EBS or RDS snapshot permissions that grant access to the public 'all' group or an external AWS account ID. This activity is a common method for exfiltrating sensitive data via unauthorized cross-account sharing, bypassing standard VPC egress monitoring and DLP controls.
Detects unauthorized cross-account copying of AWS EC2 or RDS snapshots, a key indicator of data exfiltration or staging as part of a snapshot-theft attack chain. The rule correlates copy events where the source snapshot owner is different from the destination account ID.
Detects modifications to RDS or Aurora snapshot attributes that grant public access ('all') or share the snapshot with an external AWS account ID. This activity indicates a potential data exfiltration attempt, as sharing a snapshot allows an external party to restore the database in their own environment, bypassing existing application-layer access controls.
Detects modifications to EBS snapshot attributes via ModifySnapshotAttribute where the snapshot is made publicly accessible (all group) or shared with an unauthorized AWS account ID, potentially indicating unauthorized exfiltration of disk contents.
Detects the creation of an AWS CloudShell environment followed by a high volume of file transfer activity (PutFile, GetFile, or PutObject) by the same user within a short time window. This pattern is indicative of potential initial access or abuse of CloudShell for tool staging or unauthorized data exfiltration.
Detects modifications to AWS EBS or RDS snapshot attributes to grant access to unauthorized or external AWS accounts, or the copying of snapshots to unauthorized accounts, which are common techniques for data exfiltration from cloud environments.
This rule detects modifications to AWS EC2 Snapshot or AMI (Image) attributes that result in the resource becoming publicly accessible ('all') or shared with an unapproved AWS account ID. Such activities are often precursors to data exfiltration or unauthorized access to sensitive disk images.
This rule detects potential browser-based credential and session theft by monitoring for a process that accesses multiple sensitive web browser artifacts (cookies, local state, session storage) across several user profiles in a short timeframe. It correlates this activity with the subsequent creation of a compressed archive in a temporary directory followed by an outbound network connection, indicating a multi-stage exfiltration workflow.
This rule detects potential browser-based credential and session theft by monitoring for a process that accesses multiple sensitive web browser artifacts (cookies, local state, session storage) across several user profiles in a short timeframe. It correlates this activity with the subsequent creation of a compressed archive in a temporary directory followed by an outbound network connection, indicating a multi-stage exfiltration workflow.
This rule detects potential browser-based credential and session theft by monitoring for a process that accesses multiple sensitive web browser artifacts (cookies, local state, session storage) across several user profiles in a short timeframe. It correlates this activity with the subsequent creation of a compressed archive in a temporary directory followed by an outbound network connection, indicating a multi-stage exfiltration workflow.
Detects the initialization of an AWS CloudShell session followed by file transfer operations (PutFile or GetFile). This behavior may indicate an attacker using CloudShell to stage, exfiltrate, or move tools within the cloud environment, potentially bypassing endpoint detection by operating within the cloud service infrastructure.
This rule detects potentially compromised accounts by correlating suspicious authentication activity (such as risky sign-ins, impossible travel, or malicious OAuth/Mail-rule configurations) with a subsequent spike in SharePoint or OneDrive file access, downloads, or external link sharing within a one-hour window. This behavior is indicative of an adversary performing cloud-based data exfiltration after gaining unauthorized access to an account.
Detects high-volume file download activity in Office 365/SharePoint/OneDrive audit logs. The rule correlates download spikes with users who have recently triggered security alerts related to session hijacking, token theft, or risky sign-ins, which are indicators of a potential cloud account takeover scenario.
Detects bulk mailbox export or content search operations performed by an identity shortly after a high-risk sign-in event. This pattern is indicative of potential account takeover where an adversary attempts to harvest sensitive email data at scale for BEC or extortion.
Detects an anomalous volume of file access or synchronization activity on cloud document platforms (Microsoft SharePoint, OneDrive, or Google Drive) that occurs following a high-severity risky sign-in event. The rule specifically flags potential exfiltration patterns such as large volumes of data transfer or numerous file accesses, especially if associated with unmanaged devices or connections to known personal/external file-sharing services.
Detects the creation of anonymous or guest-access sharing links for SharePoint items that are classified as sensitive (having a sensitivity label applied). This activity could indicate potential data exfiltration or unauthorized sharing of protected corporate information.
Detects modifications to AWS EC2 snapshot or AMI attributes that grant cross-account permissions, including making them publicly accessible. This activity may indicate an attempt to exfiltrate volume data, such as credentials, configuration, or database contents, to an external AWS account.
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.
Detects rapid mass-cloning or downloading of private GitHub repositories shortly after an OAuth token authorization, originating from IP addresses or countries not previously associated with the user account. This behavior is indicative of unauthorized bulk data extraction using compromised credentials, consistent with threat actor activity (e.g., TeamPCP/UNC6780).
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