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

Static analysis result for SHA-256 5af272f3ad4cf860…

MALICIOUS

Office (OLE) / .XLSX

268.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: f3098e116d66d811d53505e0ff816600 SHA-1: ed9bc4d122b72222565b0be8ac43d9a6dacbec4a SHA-256: 5af272f3ad4cf860120ef89756fe716df27c8218c44176101ef237d127ae3dda
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.005 Visual Basic

The critical heuristic firing for CVE-2017-0199 indicates the sample is designed to exploit this vulnerability to load a remote resource. The embedded URL 'https://ubal.do/qrnQmZ' is the likely source of the secondary payload. Although VBA macros are present, they do not contain executable statements, suggesting the exploit is directly leveraged by the OLE object rather than through macro execution.

Heuristics 3

  • 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.
  • 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://ubal.do/qrnQmZ

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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