Emerging Threathightest
SOURGUM Actor Behaviours
Suspicious behaviours related to an actor tracked by Microsoft as SOURGUM
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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
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic3 selectors
detection:
selection:
Image|contains:
- 'windows\system32\Physmem.sys'
- 'Windows\system32\ime\SHARED\WimBootConfigurations.ini'
- 'Windows\system32\ime\IMEJP\WimBootConfigurations.ini'
- 'Windows\system32\ime\IMETC\WimBootConfigurations.ini'
registry_image:
Image|contains:
- 'windows\system32\filepath2'
- 'windows\system32\ime'
CommandLine|contains: 'reg add'
registry_key:
CommandLine|contains:
- 'HKEY_LOCAL_MACHINE\software\classes\clsid\{7c857801-7381-11cf-884d-00aa004b2e24}\inprocserver32'
- 'HKEY_LOCAL_MACHINE\software\classes\clsid\{cf4cc405-e2c5-4ddd-b3ce-5e7582d8c9fa}\inprocserver32'
condition: selection or all of registry_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Techniques
Sub-techniques
Other
detection.emerging-threats
Rule Metadata
Rule ID
7ba08e95-1e0b-40cd-9db5-b980555e42fd
Status
test
Level
high
Type
Emerging Threat
Created
Tue Jun 15
Modified
Sun Oct 09
Author
Path
rules-emerging-threats/2021/TA/SOURGUM/proc_creation_win_apt_sourgrum.yml
Raw Tags
attack.t1546attack.t1546.015attack.persistenceattack.privilege-escalationdetection.emerging-threats