ZIP File Spawning JavaScript

 1title: ZIP File Spawning JavaScript
 2id: b99b32f3-aa61-495d-a6a1-2595e1551ba8
 3status: experimental
 4description: |
 5    RedCanary detected high volumes of obfuscation this year looking for apparent phishing 
 6    schemes where adversaries conceal JavaScript payloads in ZIP files and write them 
 7    to the users and temp directories. Part of the RedCanary 2024 Threat Detection Report.    
 8references:
 9    - https://redcanary.com/threat-detection-report/techniques/obfuscated-files-information/
10author: RedCanary, Sigma formatting by Micah Babinski
11date: 2024/03/21
12tags:
13    - attack.defense_evasion
14    - attack.t1027
15logsource:
16    category: network_connection
17    product: windows
18detection:
19    selection:
20        Image|endswith: '\wscript.exe'
21        CommandLine|contains|all:
22            - 'users'
23            - 'temp'
24            - '.zip'
25            - '.js'
26    condition: selection
27falsepositives:
28    - Unknown
29level: low```