gojsonq - A simple Go package to Query over JSON Data. Threat actors use automated scripts, like Microburst, to list keys and find Azure Cosmos DB accounts they can access. But query latency might vary between query executions. To help with these efforts, Microsoft Defender for Cloud alerts include the MITRE tactics with many alerts. This activity may indicate an attempt to brute force your SSH end point from multiple hosts (Botnet), Network traffic analysis detected anomalous incoming SSH communication to %{Victim IP}, associated with your resource %{Compromised Host}, from %{Attacker IP}. Each microservice is responsible for a single task in the pipeline, such as calculating tax on each order, generating tax audit records, processing each order payment, sending orders off to a fulfillment center, and generating shipping notifications. CASE statement in SQL When the compromised resource is a load balancer or an application gateway, the suspected outgoing traffic has been originated from to one or more of the resources in the backend pool (of the load balancer or application gateway). Include necessary paths in the indexing policy. Cosmos DB is a database service that is globally distributed. But with change feed, youve got a reliable mechanism for retrieving changes made to any container, all the way back to the beginning of time. There are two possible reasons for a faulty statement. ; The query within the step must have the PARTITION BY keyword. Analysis of host data indicates that the process %{Process Name} was executed by PsExec utility. Monitor with diagnostic logs in Azure Monitor: You can monitor the logs of your Azure Cosmos DB account and create dashboards from the Azure Monitor. So that, order by can further be queried over the output of group by. If you have a large number of provisioned RUs (more than 30,000) or a large amount of data stored (more than approximately 100 GB), you probably have a large enough container to see a significant reduction in query RU charges. Microsoft Ignite Data such as events and traces that occur at a second granularity are stored as logs. This tool is often associated with malicious users attacking other machines in some way. Analysis of host data on %{Compromised Host} detected that a registry key that can be abused to bypass UAC (User Account Control) was changed. Machine logs indicate that the suspicious process: '%{Suspicious Process}' was running on the machine, often associated with attacker attempts to access credentials. Subdomain takeovers enable malicious actors to redirect traffic intended for an organizations domain to a site performing malicious activity. Privilege escalation is the result of actions that allow an adversary to obtain a higher level of permissions on a system or network. A user or service principal has performed an anomalous Vault Put policy change operation followed by one or more Secret Get operations. This can indicate that the account is compromised and is being used with malicious intent. PowerZure exploitation toolkit was used to elevate access from AzureAD to Azure. Analysis of host data on %{Compromised Host} detected shellcode being generated from the command line. Analysis of processes running within a container or directly on a Kubernetes node, has detected a suspicious timestamp modification. Learn the emerging software trends you should pay attention to. Improve proximity. A suspicious SQL statement was used to query a container in this Azure Cosmos DB account. When the compromised resource is a load balancer or an application gateway, the suspected outgoing traffic has been originated from to one or more of the resources in the backend pool (of the load balancer or application gateway). Azure Cosmos DB is rapidly growing in popularity, and for good reason. The injected statement might have succeeded in exfiltrating data that the threat actor isnt authorized to access. This activity may indicate that your resource was compromised and is now used to brute force external SSH end points. This service is related to a sensitive application that allows high impact operations in the cluster such as running processes on the node or creating new containers. Such activity, while possibly legitimate user behavior,is frequently performed by attackers following compromise of resources. Available metric definitions can be retrieved by calling: To retrieve individual metrics, use the following format: To learn more, see the Azure monitoring REST API article. I tested with 1,000, 5,000, and 10,000 inserts, and got around 60ms average latency in all cases. The following script contains HTTP object allocation command. Users activity from an IP address that has been identified as an anonymous proxy IP address has been detected. User accounts with permissions to access specific systems or perform specific functions necessary for adversaries to achieve their objective may also be considered an escalation of privilege. Cosmos DB is a database service that is globally distributed. We have employed highly qualified writers. It provides the tools you need to scale both global distribution pattern and computational resources, and these tools are provided by Microsoft Azure. @JerryGoyal Unfortunately unless you're fully embracing graph I don't think it will work for your usecase as Cosmos expects a specific document format. This alert is based on hash reputation analysis leveraging the power of Microsoft threat intelligence, which includes hashes for viruses, trojans, spyware and ransomware. Network traffic analysis detected anomalous outgoing SSH communication to %{Victim IP} originating from %{Compromised Host} (%{Attacker IP}), a resource in your deployment. Cosmos DB This action was run by a PHP process. Indicates that a suspicious application has successfully accessed a container of a storage account with authentication. If you run the same query multiple times on the same dataset, it will typically have the same RU charge each time. To get a count of data-plane logs, grouped by resource: To generate a chart for data-plane logs, grouped by the type of operation: These examples are just a small sampling of the rich queries that can be performed in Azure Monitor using the Kusto Query Language. Machine logs indicate that a privileged command was run in a Docker container. A suspicious SQL statement was used to query a container in this Azure Cosmos DB account. Antimalware disabled at the same time as code execution on your virtual machine. Attackers will often disable this to exfiltrate data. A potential cause is that an attacker has uploaded a malicious executable file to your storage account, or that a legitimate user has uploaded an executable file. Analysis of host data on %{Compromised Host} detected possible manipulation of the on-host firewall. Azure Cosmos DB is a good choice for new web, mobile, gaming, and IoT applications where automatic scale, predictable performance, fast order of millisecond response times, and the ability to query over schema-free data is important. This behavior was seen [x] times today on the following machines: [Machine names], A new SSH key was added to the authorized keys file, Machine logs indicate that the suspicious process: '%{Suspicious Process}' was running on %{Compromised Host}. Analysis of Azure Resource Manager operations detected an abnormal behavior of a managed identity used by an AKS addon. Analysis of processes running within a container or directly on a Kubernetes node, has detected a file being downloaded then run in the same command. Prop 30 is supported by a coalition including CalFire Firefighters, the American Lung Association, environmental organizations, electrical workers and businesses that want to improve Californias air quality by fighting and preventing wildfires and reducing air pollution from vehicles. You can analyze these logs by running queries on the gathered data. Queries that are run from a different region than the Azure Cosmos DB account will have higher latency than if they were run inside the same region. We recommend further investigations. Analysis of DNS transactions from %{CompromisedEntity} detected anonymity network activity. The fact that it offers five consistency models is another plus. Analysis of host data on %{Compromised Host} detected the execution of a process normally associated with digital currency mining. The behavior of these admission controllers is determined by an admission webhook that the user deploys to the cluster. Learn more about. Caclsshort for change access control list is Microsoft Windows native command-line utility often used for modifying the security permission on folders and files. Azure Cosmos DB retry Attackers will overwrite common files as a way to obfuscate their actions or for persistence. It offers configurable and reliable performance, native JavaScript transactional processing, and is built for the cloud with elastic scale. This has previously been associated with attackers attempting to construct executables on-the-fly through a sequence of commands, and attempting to evade intrusion detection systems by ensuring that no individual command would trigger an alert. One of the most (perhaps the most) important things you need to do when creating a container is to decide on an appropriate partition key a single property in your data that the container will be partitioned by. Analysis of host data on %{Compromised Host} detected file names that are part of a toolkit associated with malware capable of launching DDoS attacks, opening ports and services and taking full control over the infected system. Recently, shes brought together Domain-Driven Design, Wardley Mapping, and Team Topologies into a conversation about helping teams adopt a fast flow of change. While this behavior can be legitimate, it's often seen in malicious activities, when threat actors try to hide their source IP. Analysis of host data on %{Compromised Host} detected a possible data egress condition. dotnet add package Microsoft.Azure.Cosmos.Table To make the below examples work, you'll need to include namespaces: using System.Linq; using Azure.Data.Table 2: Limitations on GKE clusters: GKE uses a Kuberenetes audit policy that doesn't support all alert types. This action might expose the Kubeflow dashboard to the internet. This process could be legitimate activity, or an indication that one of your machines has been compromised. I have one thread firing 5,000 items in a for loop, one at a time, and a change feed processor sitting there calculating the time it takes from the time `CreateItemAsync` is called and the time the item is processed as latency. This pattern is not normally performed by the specified user or service principal and is typically associated with secret dumping. Analysis of host data has detected suspicious download of remote file on %{Compromised Host}. Network traffic analysis detected incoming SQL communication to %{Victim IP}, associated with your resource %{Compromised Host}, from %{Attacker IP}. Azure Cosmos DB provider. These are used to get a compromised machine to call back into a machine an attacker owns. Cosmos DB Machine logs indicate that '%{process name}' was executed by account: %{user name}. Retry mechanism But query latency might vary between query executions. This tool is often associated with attacker attempts to access credentials. This anomalous access pattern may be legitimate activity. Thus, it drains all current changes with zero latency before it resumes polling. Azure Monitor collects the Azure Cosmos DB metrics by default, you will not need to explicitly configure anything. Attend online QCon Plus (Nov 30 - Dec 8, 2022). Typical related attacker activity includes copying remote administration tools to a compromised host and exfiltrating user data from it. Analysis of host data has detected the installation of tscon.exe as a service: this binary being started as a service potentially allows an attacker to trivially switch to any other logged on user on this host by hijacking RDP connections; it is a known attacker technique to compromise additional user accounts and move laterally across a network. Queries that are run from a different region than the Azure Cosmos DB account will have higher latency than if they were run inside the same region. Ill certainly run some benchmarks myself before investing into Cosmos. Microsoft Ignite Potential causes may include an intentional malware upload by an attacker, or an unintentional upload of a potentially malicious blob by a legitimate user. The kubeconfig file, normally used by the Kubelet process, contains credentials to the Kubernetes cluster API server. Specific behaviors include: The memory of the process specified contains a fileless attack toolkit: [toolkit name]. In this example, the query engine must load every document that matches the c.foodGroup = "Sausages and Luncheon Meats" filter so the RU charge is expected to be high. Attackers may do this to cover their tracks. This activity has previously been associated with installation of a backdoor. Optimize JOIN expressions by using a subquery. Cosmos DB Analysis of host data on %{Compromised Host} detected a possible web shell. A SPARQL endpoint accepts queries and returns results via HTTP.. Generic endpoints will query any Web-accessible RDF data; Specific endpoints are hardwired to query against particular datasets; The results of SPARQL queries Activity group HYDROGEN has been known to use this password to execute malware on a victim host. Azure Cosmos DB offers 99.99% availability. But how do you ensure that the duplicated data remains in sync as changes occur in the source container? A key vault has been accessed from a known TOR exit node. The essence of business agility is being able to respond quickly and systematically to feedback. Monitoring data. This script could either be legitimate activity, or an indication of a compromised host. Attackers will often egress data from machines they have compromised. Analysis of processes running within a container or directly on a Kubernetes node, has detected a possible known credential access tool was running on the container, as identified by the specified process and commandline history item. See Query limits for details. This could be legitimate activity, or an indication of a compromised host. But data from an individual partitioned collection is fetched serially with respect to the query. This is a test alert generated by Microsoft Defender for Cloud. Real-time protection temporary disablement of the antimalware extension was detected in your virtual machine by analyzing the Azure Resource Manager operations in your subscription. But these are efficient point reads. Get the most out of the InfoQ experience. A user has logged in to your resource from a domain no other users have connected from in the last 60 days. The pipeline is broken up into a set of smaller microservices, each of which can be scaled out independently. It's simple to globally distribute data in Azure Cosmos DB to ensure you can bring your data closer to your app. A binding to a role with high privileges gives the user\group high privileges in the cluster. Follow the performance tips, and use a single CosmosClient instance across an entire process. Analysis of host data has detected suspicious access to encrypted user passwords. Hot partition key. Cassandra All you do is write an observer class that implements IChangeFeedObserver. Analysis of network traffic from %{Compromised Host} detected suspicious network activity. It offers configurable and reliable performance, native JavaScript transactional processing, and is built for the cloud with elastic scale. Analysis of host data has detected a sequence of one or more processes running on %{machine name} that have historically been associated with malicious activity. An SSH authorized_keys file was accessed in a method similar to known malware campaigns. These are used to get a compromised machine to call back into a machine an attacker owns. The CFP library provides a high-level abstraction over direct access that greatly simplifies the process of reading the change feed from all the different partitions of a container. For more information, see samples for Kusto queries. A successful login occurred after an apparent brute force attack on your resource. COSMOS_RG_East) Click the Create button to Create a resource Click Azure Cosmos DB or find it in the Databases Category; Click the Create button; We are using the Core (SQL) Recommended, Click the Create button. An unusual config reset was detected in your virtual machine by analyzing the Azure Resource Manager operations in your subscription. Ill probably blog a little about it, since theres really very little information online about change feed latency. In some cases, the alert detects a legitimate action (a new application or Azure service). Microsoft Defender for Resource Manager identified a suspicious invocation of a high-risk operation in your subscription which might indicate an attempt to access credentials. The operations executed via Stored procedure aren't logged so they aren't available under the OperationType metric. MicroBurst's exploitation toolkit was used to execute code on your virtual machines. Partitioning a step requires the following conditions: The input source must be partitioned. Limit Query Results; Create a Relationship ; In MongoDB, you can sort the results of a query by using the limit() method.. Azure Cosmos DB provides a custom experience for working with metrics. Analysis of host data on %{Compromised Host} detected a combination of systeminfo commands that has previously been associated with one of activity group GOLD's methods of performing post-compromise self-cleanup activity. In this article. Obfuscation is often mistaken with encryption, but they are different concepts. In the order processing pipeline scenario, for example, this would enable you to take all the events and materialize a single view for tracking the order status. Analysis of processes running within a container or directly on a Kubernetes node, has detected an attempt to stop apt-daily-upgrade.timer service. Note that this type of activity could possibly cause your IP to be flagged as malicious by external entities. (More on this later.) Someone logged on to your resource from an unusual Azure Data Center. Azure Cosmos DB distributes the overall provisioned throughput evenly across physical partitions. Source: https://devblogs.microsoft.com/cosmosdb/distributed-postgresql-comes-to-azure-cosmos-db/. Fileless attack toolkits use techniques that minimize or eliminate traces of malware on disk, and greatly reduce the chances of detection by disk-based malware scanning solutions. A suspicious SQL statement was used to query a container in this Azure Cosmos DB account. There are several different triggers available, including the one that we care about here, the Azure Cosmos DB trigger. The identified operations are designed to provide backward compatibility with classic roles that are no longer commonly used. Azure Cosmos DB collects the same kinds of monitoring data as other Azure resources, which are described in Monitoring data from Azure resources.See Azure Cosmos DB monitoring data reference for a detailed reference of the logs and metrics created by Azure Cosmos DB.. Find Jobs in Germany: Job Search - Expatica Germany A suspicious SQL statement was used to query a container in this Azure Cosmos DB account. Monitor programmatically with SDKs: You can monitor your Azure Cosmos DB account programmatically by using the .NET, Java, Python, Node.js SDKs, and the headers in REST API. The operation was performed by the specified user account. Seeing your code and how youre measuring the latency would be helpful. Analysis of host data on %{Compromised Host} detected the use of pcalua.exe to launch executable code. Analysis of DNS transactions from %{CompromisedEntity} detected digital currency mining activity. CASE statement This anomalous access pattern may be legitimate activity, but it could be an indication that a threat actor has gained access to the key vault in an attempt to access the secrets contained within it. An anomalous number of key vault operations were performed by a user, service principal, and/or a specific key vault. This resembles a dictionary attack, in which an attacker performs numerous authentication attempts using a dictionary of predefined account names and passwords in order to find valid credentials to access the host. Event level: Informational, Status: started. Analysis of host data on %{Compromised Host} detected a combination of systeminfo commands that has previously been associated with one of activity group GOLD's methods of performing reconnaissance activity. Azure Cosmos DB stores data in the following tables. Entity Framework If attackers gain access to a VM with a mounted Azure file share, they can use it to spread malware to other VMs that mount the same share. Policy rules have additional limits to the number of conditions and their complexity. Machine logs indicate a possible known credential access tool was running on %{Compromised Host} launched by process: '%{Suspicious Process}'. There is no concept of a JOIN in any NoSQL database engine, and we can avoid having to perform our own manual joins if we simply duplicate the same information across documents in different containers. This activity group has been known to use this password to execute Pirpi malware on a victim host. Adversaries will likely attempt to obtain legitimate credentials from users or administrator accounts (local system administrator or domain users with administrator access) to use within the network. Azure Cosmos DB is rapidly growing in popularity, and for good reason. Some CVE-2022-0185 exploitations use this technique. Analysis of the Kubernetes audit logs detected an excessive permissions role assignment to your cluster. This activity is considered malicious. When the compromised resource is a load balancer or an application gateway, the suspected incoming traffic has been forwarded to one or more of the resources in the backend pool (of the load balancer or application gateway). https://portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade. This could be legitimate activity, or an indication of a compromised host. Conficker infected millions of computers including government, business and home computers in over 200 countries/regions, making it the largest known computer worm infection since the 2003 Welchia worm. But query latency might vary between query executions. For Azure Cosmos DB limits, see Limits in Azure Cosmos DB. Successful logins were made from that IP with the following user(s): %{Accounts used to successfully sign in to host}. Microsoft Antimalware for Azure has taken an action to protect this machine from malware or other potentially unwanted software. But query latency might vary between query executions. This activity may indicate that your resource was compromised and is now engaged in denial-of-service attacks against external endpoints. AWS Introduces Static IP Addresses for Application Load Balancer You can evaluate multiple conditions in the CASE statement. Access to this file is often associated with attackers attempting to access those credentials, or with security scanning tools which check if the file is accessible. Resource logs from Azure Cosmos DB can be identified with. The features monitored include the container image registry used, the account performing the deployment, day of the week, how often this account performs pod deployments, user agent used in the operation, whether this is a namespace to which pod deployments often occur, and other features.
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