Query: write Sigma for Adversaries may abuse the Windows command shell for execution. The Windows command shell ([cmd](https://attack.mitre.org
Matching passage: Sigma rule: Adversaries may abuse the Windows command shell for execution. The Windows command shell ([cmd](https://attack.mitre.org. Logsource: windows / ps_script. Rule: title: Powershell Execute Batch Script id: b5522a23-82da-44e5-9c8b-e10ed8955f88 status: test description: 'Adversaries may abuse the Windows command shell for execution. The Windows command shell ([cmd](https://attack.mitre.org/software/S0106)) is the primary command prompt on Windows systems. The Windows command prompt can be used to control almost any aspect of a system, with various permission levels required for different subsets of commands. Batch files (ex: .bat or .cmd) also provide the shell with a list of sequential commands to run, as well as normal scripting operations such as conditionals and loops. Common uses of batch files include long or repetitive tasks, or the need to run the same set of commands on multiple system ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1059.003/T1059.003.md#atomic-test-1---create-and-execute-batch-script author: frack113 date: 2022-01-02 tags: - attack.execution - attack.t1059.003 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection_start: ScriptBlockText|contains: Start-Process selection_batch: ScriptBlockText|contains: - .cmd - .bat condition: all of selection_* falsepositives: - Legitimate administration script level: medium
Near-miss passage: Sigma rule: Identifies when an admission controller is executed in GCP Kubernetes. A Kubernetes Admission controller intercepts, and. Logsource: gcp / gcp.audit. Rule: title: Google Cloud Kubernetes Admission Controller id: 6ad91e31-53df-4826-bd27-0166171c8040 status: test description: 'Identifies when an admission controller is executed in GCP Kubernetes. A Kubernetes Admission controller intercepts, and possibly modifies, requests to the Kubernetes API server. The behavior of this admission controller is determined by an admission webhook (MutatingAdmissionWebhook or ValidatingAdmissionWebhook) that the user deploys in the cluster. An adversary can use such webhooks as the MutatingAdmissionWebhook for obtaining persistence in the cluster. For example, attackers can intercept and modify the pod creation operations in the cluster and add their malicious container to every created pod. An adversary can use the webhook ValidatingAdmissionWebhook, which could be used to obtain access credentials. An adversary could use the webhook to intercept the requests to the API server, record secrets, and other sensitive information. ' references: - https://cloud.google.com/kubernetes-engine/docs author: Austin Songer @austinsonger date: 2021-11-25 modified: 2022-12-18 tags: - attack.privilege-escalation - attack.initial-access - attack.persistence - attack.stealth - attack.t1078 - attack.credential-access - attack.t1552 - attack.t1552.007 logsource: product: gcp service: gcp.audit detection: selection: gcp.audit.method_name|startswith: admissionregistration.k8s.io.v gcp.audit.method_name|contains: - .mutatingwebhookconfigurations. - .validatingwebhookconfigurations. gcp.audit.method_name|endswith: - create - patch - replace condition: selection falsepositives: - Google Cloud Kubernetes Admission Controller may be done by a system administrator. - If known behavior is causing false positives, it can be exempted from the rule. level: medium