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

Static analysis result for SHA-256 fac9e99d763f8b4d…

MALICIOUS

Office (OOXML) / .XLSX

734.2 KB Created: 2020-07-07 21:52:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: b9285d8cc28b74185664200a4bfbd067 SHA-1: 74238313726b3a4e71d7dfe84a0c11bc0c11d954 SHA-256: fac9e99d763f8b4d25ba39ae746cafa3faa4e990f62c4ae949a1d37ffc9c9b78
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an Office document containing an embedded OLE object identified as an Equation Editor object. This is a high-severity finding and a common technique for exploiting vulnerabilities in Microsoft Office to execute arbitrary code. The embedded object is likely a malicious payload or exploit. No scripts were extracted, and no document body was available for analysis.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/zOVvLG.3a contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
a9412e1b24c10a7074a649e3416c401f7db53f75041588c1b2543e36c8d91e9a		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/zOVvLG.3a 835072 bytes
ooxml_oleobject_00_ole10native_00.bin
19faab230122f2b445c8cb401b97db8cd7e058147bf62acea5c0ffab0a7729bd		 ole-package OOXML xl/embeddings/zOVvLG.3a Ole10Native stream: Ole10Native 826332 bytes

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