Emerging Threathightest
Small Sieve Malware Registry Persistence
Detects registry value with specific intentional typo and strings seen used by the Small Sieve malware
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Nasreddine Bencherchali (Nextron Systems)Created Fri May 19Updated Thu Aug 1765c6e3c1-fb28-4c03-a51e-84919d8185f12021
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 Logic2 selectors
detection:
selection_path:
TargetObject|contains: '\Microsoft\Windows\CurrentVersion\Run\'
selection_value:
- TargetObject|contains: 'Microsift'
- Details|contains: '.exe Platypus'
condition: all of selection_*False Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Tactics
Other
detection.emerging-threats
Rule Metadata
Rule ID
65c6e3c1-fb28-4c03-a51e-84919d8185f1
Status
test
Level
high
Type
Emerging Threat
Created
Fri May 19
Modified
Thu Aug 17
Path
rules-emerging-threats/2021/Malware/Small-Sieve/registry_set_malware_small_sieve_evasion_typo.yml
Raw Tags
attack.persistencedetection.emerging-threats