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

Static analysis result for SHA-256 e687f4471f3aa5ce…

MALICIOUS

Office (OLE) / .XLS

1.71 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: aa66ddb3dadc90948fe46f8444c3018b SHA-1: 8a910c061e09c0ba17d9bc9c40bb38a5ad18718f SHA-256: e687f4471f3aa5ce3489da4e0a522fb533e137870b5f878f28324b1e85eef3f3
68 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. This technique is used to download and execute a remote payload from the provided URL. The VBA project contains no executable statements, suggesting the exploit is triggered by the OLE object itself rather than macro code.

Heuristics 2

  • 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.

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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