Malicious Office (OLE) / .XLSX — malware analysis report

Static analysis result for SHA-256 700b86b936426ac3…

MALICIOUS

Office (OLE) / .XLSX

1.38 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 276274b804683f9b015af1af8d4fcd68 SHA-1: 82c4589b4714ba3682733ca3fc260fdc80ae2465 SHA-256: 700b86b936426ac3bb8ab4d38d84e3019f7840cdd6340b22f4dd3e358e1a122d
62 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample contains a critical heuristic firing for CVE-2017-0199, indicating it attempts to exploit this vulnerability to load a remote payload. The embedded URL, https://st3.pro/hNjKTUf?&kale=noxious&step-grandfather=large&monsoon, is likely the source of this payload. The exploit facilitates client execution by leveraging a remote loader.

Heuristics 2

  • OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199
    Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://st3.pro/hNjKTUf?&kale=noxious&step-grandfather=large&monsoon

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