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

Static analysis result for SHA-256 ead5ea52f1c57c73…

MALICIOUS

Office (OLE) / .XLSX

1.01 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: dbc6ae2130e861686e555c7c65dabac8 SHA-1: 86eab0a3c7abd7b338cf0b5f09c2ab5badd5fef6 SHA-256: ead5ea52f1c57c7371351896c4e6df6d9643cc1f6112d8dca6b428e19ef77089
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 vulnerability is used to download and execute a remote payload from the specified URL. The exploit leverages a URL Moniker to achieve remote code execution, likely leading to a second-stage infection.

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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