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

Static analysis result for SHA-256 9270474814491efc…

MALICIOUS

Office (OLE) / .XLSX

481.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 08fb9822dc63acff13a2faec811cd744 SHA-1: 11a886d6ba2fbb73e55831763e26fbc5b695b4f6 SHA-256: 9270474814491efc7c0f4ef6f1200c68c1908ad27c31e5316370acf78e97fc09
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1566.001 Phishing: Spearphishing Attachment T1059.001 PowerShell: PowerShell T1204 User Execution

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from the provided URL. The VBA project contains 1206 bytes of source code, but no executable statements were found, suggesting the malicious functionality is likely within the OLE object itself. The extracted URL is the primary indicator of compromise.

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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