Emerging Threatcriticaltest
DNS RCE CVE-2020-1350
Detects exploitation of DNS RCE bug reported in CVE-2020-1350 by the detection of suspicious sub process
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Launch
Florian Roth (Nextron Systems)Created Wed Jul 15Updated Tue Jul 12b5281f31-f9cc-4d0d-95d0-45b91c45b4872020
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:
ParentImage|endswith: '\System32\dns.exe'
filter:
Image|endswith:
- '\System32\werfault.exe'
- '\System32\conhost.exe'
- '\System32\dnscmd.exe'
- '\System32\dns.exe'
condition: selection and not filterFalse Positives
Unknown but benign sub processes of the Windows DNS service dns.exe
MITRE ATT&CK
Sub-techniques
Other
cve.2020-1350detection.emerging-threats
Rule Metadata
Rule ID
b5281f31-f9cc-4d0d-95d0-45b91c45b487
Status
test
Level
critical
Type
Emerging Threat
Created
Wed Jul 15
Modified
Tue Jul 12
Path
rules-emerging-threats/2020/Exploits/CVE-2020-1350/proc_creation_win_exploit_cve_2020_1350.yml
Raw Tags
attack.initial-accessattack.t1190attack.executionattack.t1569.002cve.2020-1350detection.emerging-threats