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

Static analysis result for SHA-256 6c1c8320acbfe024…

MALICIOUS

Office (OLE) / .XLS

726.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 050d0fd2594d92e1bcde3ed2845a2ef1 SHA-1: 5793045aecd54d5277df737b4b2adbe84e29bcf6 SHA-256: 6c1c8320acbfe024051137623e3eb8a376ec16ac412ec836b3db75ed6772111f
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 remote content. The embedded URL, https://presentationwithgreatnesshappytoviewbestcompromisewithmultiplethingsbestno.docx@acessaurl.com/bfSIlIv, is likely the source of the secondary payload. Although VBA macros were present, they contained no executable statements, suggesting the exploit is delivered via the OLE object itself 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://presentationwithgreatnesshappytoviewbestcompromisewithmultiplethingsbestno.docx@acessaurl.com/bfSIlIv

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