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

Static analysis result for SHA-256 63a1fe8ac5a71695…

MALICIOUS

Office (OLE) / .XLS

1.17 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: c7872daffc3e3ebb82767d76b666b84a SHA-1: 216df5633d5e9cbbf7adc26d5207fd801857b3f3 SHA-256: 63a1fe8ac5a716954156b21911bfeecb3438933c6a981f8828173adc2bf7ca89
70 Risk Score

Malware Insights

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

The sample is an Excel file that exploits CVE-2017-0199 via an OLE2Link object to download and execute a remote payload from the URL 'https://link.orai.io/nBuIRQ?&mix=gaudy&role=yummy&will=flawless&technician'. Although VBA macros are present, they do not contain executable statements, indicating the exploit relies on the CVE directly. The embedded VBA code is primarily boilerplate for worksheet objects.

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://link.orai.io/nBuIRQ?&mix=gaudy&role=yummy&will=flawless&technician

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

Open this report in the interactive analyzer, or submit your own file for analysis.