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

Static analysis result for SHA-256 631f7762bf57aaea…

MALICIOUS

Office (OLE) / .XLS

1.39 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 62728d9149ba68f909f9aba16ed087ae SHA-1: afce3044f7bb6e396e5393a26af8335f1516a363 SHA-256: 631f7762bf57aaea82c6cc6a258cc23624b08d06593c59925bbaf85e52cac980
70 Risk Score

Malware Insights

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

The file is an Excel spreadsheet that leverages the CVE-2017-0199 vulnerability to download and execute a remote loader from the URL 'https://goodcareergivenmebestthisgoodforbestwaytogivenmegreatness.doc@url.cilix.co.uk/b91OI7'. Although VBA macros are present, they do not contain executable statements, indicating the exploit relies on the OLE vulnerability rather than macro execution. The presence of the CVE-2017-0199 exploit points to a likely initial access vector via spearphishing attachment.

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://goodcareergivenmebestthisgoodforbestwaytogivenmegreatness.doc@url.cilix.co.uk/b91OI7
    • 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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