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

Static analysis result for SHA-256 5158d0d207d89aec…

MALICIOUS

Office (OLE) / .XLSX

1.21 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: cb34fe6cca91b8e75a9696cf1885a88f SHA-1: 2abddcefd9a44d6fe7b002deee04eb8c324bbf1b SHA-256: 5158d0d207d89aec3aa2fb28a107269d9bed3f9b0f7f595c0e3668c92c25eb9e
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object. This technique is used to download and execute a remote payload from the specified URL. The extracted URL is the primary indicator of compromise.

Heuristics 1

  • 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.
    URL https://st3.pro/hNjKTUf?&chit-chat=selective&missile=curious&pamphlet=vivacious&order

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