Query: rule covering Detects a script interpreter wscript/cscript opening a network connection to a non-local network. Adversaries may use sc
Matching passage: Sigma rule: Detects a script interpreter wscript/cscript opening a network connection to a non-local network. Adversaries may use sc. Logsource: windows / network_connection. Rule: title: Outbound Network Connection Initiated By Script Interpreter id: 992a6cae-db6a-43c8-9cec-76d7195c96fc related: - id: 08249dc0-a28d-4555-8ba5-9255a198e08c type: derived status: test description: Detects a script interpreter wscript/cscript opening a network connection to a non-local network. Adversaries may use script to download malicious payloads. references: - https://github.com/redcanaryco/atomic-red-team/blob/28d190330fe44de6ff4767fc400cc10fa7cd6540/atomics/T1105/T1105.md author: frack113, Florian Roth (Nextron Systems) date: 2022-08-28 modified: 2024-03-13 tags: - attack.command-and-control - attack.t1105 logsource: category: network_connection product: windows detection: selection: Initiated: 'true' Image|endswith: - \wscript.exe - \cscript.exe filter_main_local_ranges: DestinationIp|cidr: - 127.0.0.0/8 - 10.0.0.0/8 - 172.16.0.0/12 - 192.168.0.0/16 - 169.254.0.0/16 - ::1/128 - fe80::/10 - fc00::/7 filter_main_ms_ranges: DestinationIp|cidr: 20.0.0.0/11 condition: selection and not 1 of filter_main_* falsepositives: - Legitimate scripts level: high
Near-miss passage: Sigma rule: Detects the creation or patching of potential malicious RoleBinding/ClusterRoleBinding.. Logsource: azure / activitylogs. Rule: title: Azure Kubernetes RoleBinding/ClusterRoleBinding Modified and Deleted id: 25cb259b-bbdc-4b87-98b7-90d7c72f8743 status: test description: Detects the creation or patching of potential malicious RoleBinding/ClusterRoleBinding. references: - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes - https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/ - https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/ - https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1 author: Austin Songer @austinsonger date: 2021-08-07 modified: 2022-08-23 tags: - attack.impact - attack.credential-access - attack.t1485 - attack.t1496 - attack.t1489 logsource: product: azure service: activitylogs detection: selection: operationName: - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLEBINDINGS/WRITE - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLEBINDINGS/DELETE - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLEBINDINGS/WRITE - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLEBINDINGS/DELETE condition: selection falsepositives: - RoleBinding/ClusterRoleBinding being modified and deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. - RoleBinding/ClusterRoleBinding modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule. level: medium