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

Static analysis result for SHA-256 0b8fa64ce20b4ced…

MALICIOUS

Office (OOXML) / .XLSX

666.2 KB Created: 2023-09-27 08:05:40 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2023-09-29
MD5: 5edda4e170c74a69835e8bd822c51803 SHA-1: daf25f4e5eff37fe7677ce3139b0042a3ec5e236 SHA-256: 0b8fa64ce20b4cedd71c6e36261052f0ac8948ea296c6ada5791c90d563c7e6a
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 technique is commonly used to exploit vulnerabilities or deliver second-stage malware. No document body text or scripts were extracted, limiting further analysis of the specific payload or lure.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/zQEeL.fyogoNM 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
33362e1c1d18c9ea9231c055c3d9e9575a254ff4abbc4fd62292522526f540a0		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/zQEeL.fyogoNM 990720 bytes
ooxml_oleobject_00_ole10native_00.bin
e3dee5df59b2bc6af127546fa80d3c500852f8fcfb9d843f741ca8aa5a55dfc1		 ole-package OOXML xl/embeddings/zQEeL.fyogoNM Ole10Native stream: ole10NATIVe 980472 bytes

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