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Update AWS Defense Evasion Impair Security Services to TTP #3536

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Merged
merged 3 commits into from
Jun 2, 2025
Merged

Update AWS Defense Evasion Impair Security Services to TTP #3536

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a182c8c
updating to TTP
patel-bhavin May 22, 2025
d3deda8
Merge branch 'develop' into aws_to_ttp
pyth0n1c Jun 2, 2025
4cfe72f
Merge branch 'develop' into aws_to_ttp
pyth0n1c Jun 2, 2025
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30 changes: 27 additions & 3 deletions detections/cloud/aws_defense_evasion_impair_security_services.yml
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Original file line number Diff line number Diff line change
@@ -1,10 +1,10 @@
name: AWS Defense Evasion Impair Security Services
id: b28c4957-96a6-47e0-a965-6c767aac1458
version: 7
date: '2025-05-02'
version: 8
date: '2025-05-22'
author: Bhavin Patel, Gowthamaraj Rajendran, Splunk
status: production
type: Hunting
type: TTP
description: The following analytic detects attempts to delete critical AWS security
service configurations, such as CloudWatch alarms, GuardDuty detectors, and Web
Application Firewall rules. It leverages CloudTrail logs to identify specific API
Expand Down Expand Up @@ -35,6 +35,30 @@ references:
- https://docs.aws.amazon.com/cli/latest/reference/guardduty/index.html
- https://docs.aws.amazon.com/cli/latest/reference/waf/index.html
- https://www.elastic.co/guide/en/security/current/prebuilt-rules.html
drilldown_searches:
- name: View the detection results for - "$user$"
search: '%original_detection_search% | search user = "$user$"'
earliest_offset: $info_min_time$
latest_offset: $info_max_time$
- name: View risk events for the last 7 days for - "$user$"
search: '| from datamodel Risk.All_Risk | search normalized_risk_object IN ("$user$")
starthoursago=168 | stats count min(_time) as firstTime max(_time) as lastTime
values(search_name) as "Search Name" values(risk_message) as "Risk Message" values(analyticstories)
as "Analytic Stories" values(annotations._all) as "Annotations" values(annotations.mitre_attack.mitre_tactic)
as "ATT&CK Tactics" by normalized_risk_object | `security_content_ctime(firstTime)`
| `security_content_ctime(lastTime)`'
earliest_offset: $info_min_time$
latest_offset: $info_max_time$
rba:
message: User $user$ has deleted a security service by attempting to $signature$ for account id $vendor_account$
from IP $src$
risk_objects:
- field: user
type: user
score: 90
threat_objects:
- field: src
type: ip_address
tags:
analytic_story:
- AWS Defense Evasion
Expand Down