Emerging Threathightest
Forest Blizzard APT - Custom Protocol Handler DLL Registry Set
Detects the setting of the DLL that handles the custom protocol handler. Seen being created by Forest Blizzard APT as reported by MSFT.
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Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsRegistry Set
ProductWindows← raw: windows
CategoryRegistry Set← raw: registry_set
Detection Logic
Detection Logic1 selector
detection:
selection:
TargetObject|contains: '\CLSID\{026CC6D7-34B2-33D5-B551-CA31EB6CE345}\Server'
Details|endswith: '.dll'
condition: selectionFalse Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Sub-techniques
Other
detection.emerging-threats
Rule Metadata
Rule ID
d807056b-0e00-4cec-b7f8-b8b7518e382b
Status
test
Level
high
Type
Emerging Threat
Created
Tue Apr 23
Path
rules-emerging-threats/2024/TA/Forest-Blizzard/registry_set_apt_forest_blizzard_custom_protocol_handler_dll.yml
Raw Tags
attack.privilege-escalationattack.persistenceattack.t1547.001detection.emerging-threats