Description
The rule will detect IAM user console login without MFA.
title: AWS IAM user login without MFA
id: 77caf516-34e5-4df9-b4db-20744fea0a60
status: stable
description: IAM user login without MFA which will break security as well as compliance.
references:
- https://securitylabs.datadoghq.com/cloud-security-atlas/vulnerabilities/iam-user-without-mfa/
- https://docs.aws.amazon.com/awscloudtrail/latest/userguide/cloudtrail-event-reference-aws-console-sign-in-events.html
author: Thuya@Hacktilizer
date: 2024-11-08
modified: 2024-11-08
tags:
- attack.Initial Access
- attack.T1078.004
logsource:
product: aws
service: cloudtrail
detection:
selection:
eventName: 'ConsoleLogin'
additionalEventData.MFAUsed: 'NO'
condition: selection
falsepositives:
- legit user login without MFA (Account is not using MFA for legitimate reason)
level: medium
Public References / Exampel Event Log
{
"eventVersion": "1.08",
"userIdentity": {
"type": "IAMUser",
"principalId": "EXAMPLE6E4XEGITWATV6R",
"arn": "arn:aws:iam::999999999999:user/Anaya",
"accountId": "999999999999",
"userName": "Anaya"
},
"eventTime": "2023-07-19T21:44:40Z",
"eventSource": "signin.amazonaws.com",
"eventName": "ConsoleLogin",
"awsRegion": "us-east-1",
"sourceIPAddress": "192.0.2.0",
"userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Firefox/102.0",
"requestParameters": null,
"responseElements": {
"ConsoleLogin": "Success"
},
"additionalEventData": {
"LoginTo": "https://console.aws.amazon.com/console/home?hashArgs=%23&isauthcode=true&state=hashArgsFromTB_us-east-1_examplee9aba7f8",
"MobileVersion": "No",
"MFAUsed": "No"
},
"eventID": "e1bf1000-86a4-4a78-81d7-EXAMPLE83102",
"readOnly": false,
"eventType": "AwsConsoleSignIn",
"managementEvent": true,
"recipientAccountId": "999999999999",
"eventCategory": "Management",
"tlsDetails": {
"tlsVersion": "TLSv1.3",
"cipherSuite": "TLS_AES_128_GCM_SHA256",
"clientProvidedHostHeader": "us-east-1.signin.aws.amazon.com"
}
}