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

Static analysis result for SHA-256 7750d8649a36e588…

MALICIOUS

Office (OLE) / .XLSX

706.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: dbe8abb89bdddc76d5b1f93742b33d53 SHA-1: 5594f51abe856ef505d0ba4dbd1392debd804e75 SHA-256: 7750d8649a36e588b56b1ad405d9ea00dd97d963bb62dd83fb0e5ab04c543b42
70 Risk Score

Malware Insights

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

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is used to download and execute a remote loader. The embedded URL is the primary indicator for the payload delivery. Although VBA macros are present, they do not contain executable statements, suggesting the exploit relies on the OLE object rather than 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://linkjago.me/fhq3w8?&pupil=gigantic&antechamber=substantial&rub=quick&sideboard=divergent&petticoat

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
faef16cfc3b69e6dacc60198a7ccc61c4bb61c8632529929cd74db2189ccdc82		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 906 bytes

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