Suspicious DNS C2 to Microsoft Typosquat Domain

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 queries for the updatemicfosoft typosquatting domain used as a DNS C2 channel. The Project AK47 toolset linked to the SharePoint attacks tunnels commands over DNS to update.updatemicfosoft using an XOR key. Any resolution of this Microsoft lookalike domain indicates DNS-based command and control.

Reporting behind it

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Suspicious Cobalt Strike DNS Beacon Default Subdomain Query Linked to Cozy Bear

Suspicious DNS Query to Interactsh OAST Callback Domains

Possible Out-of-Band OAST Callback Domain Resolution via DNS

Suspicious DNS C2 to Microsoft Typosquat Domain

Pivot detection · T1071.004 · 9 related

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