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

Static analysis result for SHA-256 fb51a555286437da…

MALICIOUS

Office (OLE) / .XLS

243.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2024-05-20
MD5: 71e4c5440a96949a52716772afeecaf9 SHA-1: 1423b128556af44a2d4b459b3e6bbc552992cf23 SHA-256: fb51a555286437da6427a8f381f22a6c206c28284eafd7fe0962a4ca82b29112
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to load a remote resource from http://i8.ae/kaOPt. Although no VBA code was found to be executable, the presence of the OLE2Link object and the embedded URL strongly suggests a remote code execution attempt. The file is an Excel spreadsheet, a common delivery mechanism for such exploits.

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 http://www.day.com/dam/1.0
    • http://i8.ae/kaOPt
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/tiff/1.0/
    • http://purl.org/dc/elements/1.1/

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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