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

Static analysis result for SHA-256 92113ddcf43de58b…

MALICIOUS

Office (OLE) / .XLSX

1.33 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: a52ca9ebe4ccd07bd2608f9e606bb594 SHA-1: 0ee7248b0e96416e74b0a91ce0bdcc7271f7b6b6 SHA-256: 92113ddcf43de58bf61ec22a669d16143c09072f8a0bc2443c77a6d3b4fcb848
68 Risk Score

Malware Insights

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

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object. This technique is used to download and execute a remote loader from the provided URL. The VBA project contains macros, but they do not appear to contain executable statements, suggesting the exploit is directly within the OLE object structure.

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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