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

Static analysis result for SHA-256 ded40947bc04519b…

MALICIOUS

Office (OLE) / .XLSX

1.25 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: eac22cc52ad8d0bd6a02e81f9a015655 SHA-1: 9f383e974a20dc5231f72ced947d3a97d4479fba SHA-256: ded40947bc04519bf9e907518b1734f05c67bf04e151ded081ea3e068b1b1ace
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object pointing to a remote URL. This suggests the file is designed to act as a loader, downloading and executing a second-stage payload from the specified URL. Although the VBA project contains no executable statements, the presence of the OLE object and the URL is sufficient evidence for this attack pattern.

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.
  • VBA project contains no executable statements low OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes

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