May 2024 (20)
AWS EC2 Unauthorized Admin Credential Fetch via Assumed Role
2 rules 2 TTPsThe rule detects the first occurrence of an unauthorized attempt by an AWS role to use `GetPasswordData` to access the administrator password of an EC2 instance, potentially indicating privilege escalation or lateral movement.
Ollama Model Exfiltration Attempt Detection
2 rules 1 TTPThis brief describes detection of potential data exfiltration attempts targeting Ollama model metadata and configuration endpoints by adversaries repeatedly querying specific API endpoints to extract sensitive model information.
AWS Bedrock GuardRails Deletion Attempt
2 rules 1 TTPDetection of attempts to delete AWS Bedrock GuardRails, security controls that prevent harmful AI outputs, via the DeleteGuardrail API in AWS CloudTrail logs, potentially indicating an adversary attempting to remove these safeguards after compromising credentials to manipulate model behavior for malicious purposes.
AWS IAM Roles Anywhere Trust Anchor Created with External CA
2 rules 2 TTPsThe creation of an AWS IAM Roles Anywhere Trust Anchor using an external Certificate Authority (CA) instead of an AWS-managed CA allows adversaries to establish persistent access by using their own CA to sign certificates for authentication.
AWS Lambda Layer Added to Existing Function
2 rules 2 TTPsDetection of a Lambda layer being added to an existing AWS Lambda function, potentially indicating malicious activity such as persistence, unauthorized code execution, or data interception by an attacker with the ability to modify function configurations.
AWS S3 Bucket Enumeration and Brute Force Attempts
2 rules 4 TTPsA high number of failed S3 operations (AccessDenied errors) against a single bucket from a single source address within a short timeframe can indicate attempts to enumerate bucket objects, brute-force object keys, or inflate AWS billing.
AWS S3 Bucket Policy Modified to Share with External Account
2 rules 3 TTPsAn attacker modifies an Amazon S3 bucket policy to grant access to an external AWS account, potentially leading to unauthorized data access and exfiltration.
AWS Systems Manager SecureString Parameter Request with Decryption Flag
2 rules 1 TTPThis rule detects when an AWS resource accesses SecureString parameters within AWS Systems Manager (SSM) with the decryption flag set to true, potentially indicating credential access.
Dgraph Unauthenticated Admin Token Disclosure via /debug/vars
3 rules 2 TTPsDgraph versions prior to 25.3.3 expose the admin token via the `/debug/vars` endpoint, allowing unauthenticated attackers to bypass authentication and gain administrative access.
Kubernetes Event Deletion for Defense Evasion
2 rules 1 TTPAn adversary may delete Kubernetes events to evade detection and hide malicious activity within a Kubernetes environment by removing audit logs.
Monetr Lunch Flow SSRF Vulnerability
2 rules 1 TTP 1 IOCA server-side request forgery (SSRF) vulnerability in Monetr's Lunch Flow integration allows authenticated users on self-hosted instances to send HTTP GET requests to arbitrary URLs, potentially exposing sensitive information.
Scriban TemplateContext MemberFilter Bypass Vulnerability
2 rules 1 TTPScriban versions before 7.0.0 are vulnerable to a sandbox escape due to improper caching of type accessors in `TemplateContext`, leading to a `MemberFilter` bypass when a `TemplateContext` is reused, potentially exposing sensitive data.
TVicPort64.sys Arbitrary Physical Memory Mapping LPE
2 rules 1 TTPThe TVicPort64.sys driver, signed by EnTech Taiwan in 2006, is vulnerable to arbitrary physical memory mapping, enabling local privilege escalation on Windows systems.
Zserio Runtime Unbounded Memory Allocation Vulnerability
2 rules 1 TTPA crafted payload can force memory allocations of up to 16 GB, leading to a denial-of-service condition in applications using the Zserio serialization framework, including those within the automotive Navigation Data Standard (NDS).
GCP Pub/Sub Subscription Creation
2 rules 2 TTPsThis rule detects the creation of a subscription in Google Cloud Platform (GCP) Pub/Sub, which could indicate unauthorized access to data streams by adversaries attempting to intercept or exfiltrate sensitive information.
Okta Admin Console Unusual Behavior Detection
2 rules 4 TTPsThis brief details detection of anomalous activity within the Okta Admin Console, potentially indicating privilege escalation, persistence, defense evasion, or initial access attempts by malicious actors.
Potential Data Exfiltration to Unusual Geographic Region via Machine Learning
2 rules 1 TTPA machine learning job has detected potential data exfiltration activity to an unusual geographical region, specifically by region name, indicating exfiltration over command and control channels.
Redis Vulnerabilities Allow Local Code Execution
2 rules 1 TTPA local attacker can exploit multiple unspecified vulnerabilities in Redis to achieve arbitrary code execution on the host system.
OpenClaw Sandbox Media Root Bypass via Unnormalized mediaUrl/fileUrl Parameter Keys
2 rules 2 TTPsA path traversal vulnerability in OpenClaw allows sandboxed agents to read arbitrary files from other agents' workspaces by exploiting unnormalized `mediaUrl` or `fileUrl` parameter keys, leading to potential exposure of sensitive data like API keys and session information.
Suspicious Execution from INetCache Folder
2 rules 3 TTPs 1 CVEThe rule detects suspicious execution of processes from the INetCache folder, often indicative of malicious payloads delivered via WININET, potentially signaling initial access or command and control activity.
April 2024 (10)
Unusual Remote File Size Indicating Lateral Movement
2 rules 3 TTPsA machine learning job has detected an unusually high file size shared by a remote host, indicating potential lateral movement as attackers bundle data into a single large file transfer to evade detection when exfiltrating valuable information.
Grafana Privilege Escalation Vulnerability
2 rules 1 TTPA remote, authenticated attacker can exploit a vulnerability in Grafana to escalate privileges.
Azure AD Certificate-Based Authentication Enabled
2 rules 1 TTPEnabling certificate-based authentication (CBA) in Azure Active Directory can be abused by attackers to establish persistence, escalate privileges, and impair defenses.
Bitbucket Global Secret Scanning Rule Deletion
2 rules 1 TTPAn adversary with administrative privileges may delete global secret scanning rules in Bitbucket to impair defenses and exfiltrate sensitive data without detection.
Dell Wyse Management Suite Unauthenticated Remote Code Execution
2 rules 4 TTPsAn unauthenticated remote code execution (RCE) vulnerability exists in Dell Wyse Management Suite, allowing attackers to execute arbitrary code without authentication.
Detection of System Control Panel Item Load from Uncommon Locations
2 rules 3 TTPsThis brief focuses on detecting the loading of system control panel items (.cpl) from unusual locations, potentially indicating DLL sideloading or other exploitation techniques by threat actors to achieve defense evasion, persistence, and privilege escalation on Windows systems.
GitHub Push Protection Bypass Detection
2 rulesDetection of a GitHub user bypassing push protection, potentially leading to the exposure of secrets.
JetBrains TeamCity Relative Path Traversal Vulnerability (CVE-2024-27199)
2 rules 1 TTP 1 CVEA relative path traversal vulnerability in JetBrains TeamCity (CVE-2024-27199) could allow limited administrative actions and has been linked to ransomware attacks.
Microsoft Sentinel Unified RBAC and Row-Level Access Support
2 rules 1 IOCMicrosoft announced unified role-based access control (RBAC) with row-level access in Microsoft Sentinel, enhancing security management and access control.
Potential Abuse of AWS Console GetSigninToken
2 rules 2 TTPsAdversaries may abuse the AWS GetSigninToken API to create temporary federated credentials for obfuscating compromised AWS access keys and pivoting to console sessions without MFA, potentially leading to lateral movement within the AWS environment.