Emerging Threathightest
Potential MuddyWater APT Activity
Detects potential Muddywater APT activity
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Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
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_mshta:
CommandLine|contains|all:
- 'vbscript:Close(Execute("CreateObject('
- 'powershell'
- '-w 1 -exec Bypass'
- '\ProgramData\'
selection_survey:
CommandLine|contains|all:
- 'Win32_OperatingSystem'
- 'Win32_NetworkAdapterConfiguration'
- 'root\SecurityCenter2'
- '[System.Net.DNS]'
selection_pwsh_backdoor:
CommandLine|contains|all:
- '[Convert]::ToBase64String'
- '[System.Text.Encoding]::UTF8.GetString]'
- 'GetResponse().GetResponseStream()'
- '[System.Net.HttpWebRequest]::Create('
- '-bxor '
condition: 1 of selection_*False Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Rule Metadata
Rule ID
36222790-0d43-4fe8-86e4-674b27809543
Status
test
Level
high
Type
Emerging Threat
Created
Fri Mar 10
Path
rules-emerging-threats/2018/TA/MuddyWater/proc_creation_win_apt_muddywater_activity.yml
Raw Tags
attack.defense-evasionattack.executionattack.g0069detection.emerging-threats