Emerging Threatcriticaltest
WannaCry Ransomware Activity
Detects WannaCry ransomware activity
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Launch
Florian Roth (Nextron Systems), Tom U. (collection), oscd.community, Jonhnathan RibeiroCreated Wed Jan 16Updated Sat Oct 1841d40bff-377a-43e2-8e1b-2e543069e0792017
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 Logic2 selectors
detection:
selection_img:
- Image|endswith:
- '\tasksche.exe'
- '\mssecsvc.exe'
- '\taskdl.exe'
- '\taskhsvc.exe'
- '\taskse.exe'
- '\111.exe'
- '\lhdfrgui.exe'
# - '\diskpart.exe' # cannot be used in a rule of level critical
- '\linuxnew.exe'
- '\wannacry.exe'
- Image|contains: 'WanaDecryptor'
selection_cmd:
CommandLine|contains: '@Please_Read_Me@.txt'
condition: 1 of selection_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Techniques
Other
attack.t1222.001detection.emerging-threats
Rule Metadata
Rule ID
41d40bff-377a-43e2-8e1b-2e543069e079
Status
test
Level
critical
Type
Emerging Threat
Created
Wed Jan 16
Modified
Sat Oct 18
Path
rules-emerging-threats/2017/Malware/WannaCry/proc_creation_win_malware_wannacry.yml
Raw Tags
attack.lateral-movementattack.t1210attack.discoveryattack.t1083attack.defense-evasionattack.t1222.001attack.impactattack.t1486attack.t1490detection.emerging-threats