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

Static analysis result for SHA-256 1f9d396e39d6e192…

MALICIOUS

Office (OLE) / .XLSX

1.05 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 7ffe7fbe6a38ca0f3e09c2a542fa9b4e SHA-1: 9900502973d9e0d259249de3085e509216c8139a SHA-256: 1f9d396e39d6e192785dd6d01093e95fcce761eba6466ee8ee77f66045af0600
60 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

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 provided URL. The file is an Excel spreadsheet, and the exploit targets a vulnerability in how Office applications handle OLE objects and URL Monikers.

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.

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