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Adding AKS rules #53

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merged 2 commits into from
May 17, 2023
Merged

Adding AKS rules #53

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3464568
Adding more rules for azure AKS activities
migg24 May 2, 2023
56501db
removed opencost-ui
migg24 May 3, 2023
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14 changes: 11 additions & 3 deletions rules/falco_rules.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -1030,7 +1030,7 @@
tags: [host, container, filesystem, mitre_discovery, T1005]

- list: safe_etc_dirs
items: [/etc/cassandra, /etc/ssl/certs/java, /etc/logstash, /etc/nginx/conf.d, /etc/container_environment, /etc/hrmconfig, /etc/fluent/configs.d]
items: [/etc/cassandra, /etc/ssl/certs/java, /etc/logstash, /etc/nginx/conf.d, /etc/container_environment, /etc/hrmconfig, /etc/fluent/configs.d. /etc/alertmanager]

- macro: fluentd_writing_conf_files
condition: (proc.name=start-fluentd and fd.name in (/etc/fluent/fluent.conf, /etc/td-agent/td-agent.conf))
Expand Down Expand Up @@ -1917,7 +1917,8 @@
sysdig/sysdig,
sematext_images,
k8s.gcr.io/dns/k8s-dns-node-cache,
registry.k8s.io/dns/k8s-dns-node-cache
registry.k8s.io/dns/k8s-dns-node-cache,
mcr.microsoft.com/oss/kubernetes/kube-proxy
]

- macro: falco_privileged_containers
Expand Down Expand Up @@ -2467,7 +2468,8 @@
quay.io/prometheus-operator/prometheus-operator, k8s.gcr.io/ingress-nginx/kube-webhook-certgen,
registry.k8s.io/ingress-nginx/kube-webhook-certgen, quay.io/spotahome/redis-operator,
registry.opensource.zalan.do/acid/postgres-operator, registry.opensource.zalan.do/acid/postgres-operator-ui,
rabbitmqoperator/cluster-operator)
rabbitmqoperator/cluster-operator, quay.io/kubecost1/kubecost-cost-model,
docker.io/bitnami/prometheus, docker.io/bitnami/kube-state-metrics, mcr.microsoft.com/oss/azure/aad-pod-identity/nmi)
or (k8s.ns.name = "kube-system"))

- macro: k8s_api_server
Expand Down Expand Up @@ -3214,6 +3216,11 @@
(k8s.ns.name = kube-system
and container.image.repository = gke.gcr.io/gcp-compute-persistent-disk-csi-driver)

- macro: known_aks_mount_in_privileged_containers
condition:
(k8s.ns.name = kube-system and container.image.repository = mcr.microsoft.com/oss/kubernetes-csi/azuredisk-csi
or k8s.ns.name = system and container.image.repository = mcr.microsoft.com/oss/kubernetes-csi/secrets-store/driver)

- macro: user_known_mount_in_privileged_containers
condition: (never_true)

Expand All @@ -3225,6 +3232,7 @@
and proc.name=mount
and not mount_info
and not known_gke_mount_in_privileged_containers
and not known_aks_mount_in_privileged_containers
and not user_known_mount_in_privileged_containers
output: Mount was executed inside a privileged container (user=%user.name user_loginuid=%user.loginuid command=%proc.cmdline pid=%proc.pid %container.info image=%container.image.repository:%container.image.tag)
priority: WARNING
Expand Down