Sigma rule: Potential Baby Shark Malware Activity

Rule

Title

Potential Baby Shark Malware Activity

Status

test

Level

high

Author

Florian Roth (Nextron Systems)

Date

2019-02-24

Modified

2023-03-08

File

rules-emerging-threats/2019/Malware/BabyShark/proc_creation_win_malware_babyshark.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects activity that could be related to Baby Shark malware

Log source

product

windows

category

process_creation

Detection

selection:
    - CommandLine|contains|all:
          - 'powershell.exe mshta.exe http'
          - '.hta'
    - CommandLine|contains:
          - 'reg query "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default"'
          - 'cmd.exe /c taskkill /im cmd.exe'
          - "(New-Object System.Net.WebClient).UploadFile('http"
condition: selection

False positives (as the rule lists them)

• Unknown

Tags

• attack.execution
• attack.discovery
• attack.stealth
• attack.t1012
• attack.t1059.003
• attack.t1059.001
• attack.t1218.005
• detection.emerging-threats

MITRE ATT&CK ids this rule names

• T1012
• T1059.001
• T1059.003
• T1218.005

References

• https://unit42.paloaltonetworks.com/new-babyshark-malware-targets-u-s-national-security-think-tanks/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2019/Malware/BabyShark/proc_creation_win_malware_babyshark.yml