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

Static analysis result for SHA-256 0931fef1b9834bc3…

MALICIOUS

Office (OLE) / .XLS

1.36 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: a44d48224e0f2c073e3cbf08eb50800b SHA-1: d119ca96280ce5ac129e4adb902e8f8699ef9f71 SHA-256: 0931fef1b9834bc379a5c1f0d2eb58f78265fc78f939ba4aa7ac1397e1ee3cc8
70 Risk Score

Malware Insights

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

The sample is an Excel file that leverages the CVE-2017-0199 vulnerability. This vulnerability allows the file to act as a remote loader, downloading and executing a secondary payload from the URL found in the OLE stream. The VBA macros themselves do not contain executable statements, but the exploit mechanism is present and points to a malicious URL.

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://youareagreatpersonwithglobalwarmupkinggoodformyentirelifekingsbacktoglobal.docx@grsh.link/dJeUuE
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/exif/1.0/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://www.extensis.com/meta/FontSense/
    • http://ns.adobe.com/photoshop/1.0/

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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