Sigma Rules
11 rules found for "Ivan Saakov"
GitHub Repository Pages Site Changed to Public
Detects when a GitHub Pages site of a repository is made public. This usually is part of a publishing process but could indicate or lead to potential unauthorized exposure of sensitive information or code.
GitHub Repository Archive Status Changed
Detects when a GitHub repository is archived or unarchived, which may indicate unauthorized changes to repository status.
AWS Bucket Deleted
Detects the deletion of S3 buckets in AWS CloudTrail logs. Monitoring the deletion of S3 buckets is critical for security and data integrity, as it may indicate potential data loss or unauthorized access attempts.
AWS ConsoleLogin Failed Authentication
Detects failed AWS console login attempts due to authentication failures. Monitoring these events is crucial for identifying potential brute-force attacks or unauthorized access attempts to AWS accounts.
AWS Successful Console Login Without MFA
Detects successful AWS console logins that were performed without Multi-Factor Authentication (MFA). This alert can be used to identify potential unauthorized access attempts, as logging in without MFA can indicate compromised credentials or misconfigured security settings.
AWS EnableRegion Command Monitoring
Detects the use of the EnableRegion command in AWS CloudTrail logs. While AWS has 30+ regions, some of them are enabled by default, others must be explicitly enabled in each account separately. There may be situations where security monitoring does not cover some new AWS regions. Monitoring the EnableRegion command is important for identifying potential persistence mechanisms employed by adversaries, as enabling additional regions can facilitate continued access and operations within an AWS environment.
AWS VPC Flow Logs Deleted
Detects the deletion of one or more VPC Flow Logs in AWS Elastic Compute Cloud (EC2) through the DeleteFlowLogs API call. Adversaries may delete flow logs to evade detection or remove evidence of network activity, hindering forensic investigations and visibility into malicious operations.
AWS SAML Provider Deletion Activity
Detects the deletion of an AWS SAML provider, potentially indicating malicious intent to disrupt administrative or security team access. An attacker can remove the SAML provider for the information security team or a team of system administrators, to make it difficult for them to work and investigate at the time of the attack and after it.
AWS Key Pair Import Activity
Detects the import of SSH key pairs into AWS EC2, which may indicate an attacker attempting to gain unauthorized access to instances. This activity could lead to initial access, persistence, or privilege escalation, potentially compromising sensitive data and operations.
New AWS Lambda Function URL Configuration Created
Detects when a user creates a Lambda function URL configuration, which could be used to expose the function to the internet and potentially allow unauthorized access to the function's IAM role for AWS API calls. This could give an adversary access to the privileges associated with the Lambda service role that is attached to that function.
Modification or Deletion of an AWS RDS Cluster
Detects modifications to an RDS cluster or its deletion, which may indicate potential data exfiltration attempts, unauthorized access, or exposure of sensitive information.