ttp_windows_sharepoint_cve_2025_53770_webshell_succeeded

yara-lApache-2.0from chronicle/detection-rules

Detects the creation of a file containing 'spinstall0' in specific SharePoint LAYOUTS directories. This activity is a strong indicator of successful post-exploitation of the SharePoint Server vulnerability CVE-2025-53770, where an attacker has likely placed a web shell for persistent access.

quality90

fp risk—

forks0

ATT&CK techniques

T1505.003

rule sourcelocked

title: ████████████████████████
id: ████████-████-████-████-████████████
status: ██████████
description: ██████████████████████████████████████████
             ████████████████████████████████████████
author: ████████
tags:
  - attack.████
  - attack.████
logsource:
  product: ████████
  category: ████████████
detection:
  selection:
    Image|endswith: '████████████████'
    CommandLine|contains:
      - '████████████████████████'
      - '████████████████████████'
      - '██████████████████'
  condition: selection
level: ████████
falsepositives:
  - ████████████████████

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