Malicious SUNBURST Command and Control DNS Query to avsvmcloud Domain (via dns_query)

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1071.004DNS
Exfiltration
Impact

What it detects

This rule detects DNS lookups containing the avsvmcloud domain used as the SUNBURST first-stage command and control and victim beaconing channel. The backdoor encodes environment data into subdomains of avsvmcloud during its DGA-style callbacks. Detecting any avsvmcloud query is a high fidelity indicator of a SUNBURST compromised host.

Reporting behind it

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Malicious SUNBURST Command and Control DNS Query to avsvmcloud Domain (via dns_query)

Pivot detection · T1071.004 · 9 related

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