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sunburst_fqdn_iocs.yml
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sunburst_fqdn_iocs.yml
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AnalysisType: rule
Filename: sunburst_fqdn_iocs.py
RuleID: "IOC.SunburstFQDNIOCs"
DisplayName: "Sunburst Indicators of Compromise (FQDN)"
Enabled: true
LogTypes:
- AWS.ALB
- AWS.CloudTrail
- AWS.GuardDuty
- AWS.S3ServerAccess
- AWS.VPCFlow
- Box.Event
- CiscoUmbrella.DNS
- GCP.AuditLog
- Gravitational.TeleportAudit
- GSuite.Reports
- Okta.SystemLog
- OneLogin.Events
- Osquery.Differential
Tags:
- AWS
- Box
- DNS
- GCP
- GSuite
- SSH
- OneLogin
- Osquery
- Initial Access:Trusted Relationship
- Deprecated
Reports:
MITRE ATT&CK:
- TA0001:T1199
Severity: High
Description: >
Monitors for communication to known Sunburst Backdoor FQDNs. These IOCs indicate a potential breach and have been associated with a sophisticated nation-state actor.
Reference: >
https://www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html
Runbook: >
Investigate the resources communicating with the matched IOC for signs of compromise or other malicious activity. Consider rotating credentials on any systems observed communicating with these known malicious systems.
SummaryAttributes:
- p_any_domain_names
- p_any_ip_addresses
- p_any_sha256_hashes
Tests:
- Name: Non-matching traffic
ExpectedResult: false
Log:
{
"dstport": 53,
"dstaddr": "1.1.1.1",
"srcaddr": "10.0.0.1",
"p_any_domain_names": ["example.com"],
}
- Name: Sunburst Indicator of Compromise (FQDN) Detected
ExpectedResult: true
Log:
{
"srcaddr": "13.59.205.66",
"dstaddr": "10.0.0.1",
"p_any_domain_names": ["incomeupdate.com"],
}