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

Static analysis result for SHA-256 aea2d24f87ce0cb0…

MALICIOUS

Office (OOXML) / .XLSX

715.6 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: f608ee739a0eab3f3393aa4e807e2d12 SHA-1: bfe3708154d9a1e2a2cd92c58a6d02fc4f864a71 SHA-256: aea2d24f87ce0cb0b2618065d1031635d1ec602dfcc168c5d6607ad3012fb2ed
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The file is an Excel document containing an embedded OLE object, specifically 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 itself is the primary indicator of compromise.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/IVF5u8IQ.xCr7Jjg 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
c78865b17a6863fc9a8bba2927941f837350155a8a5208ff36b819f5869048a1		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/IVF5u8IQ.xCr7Jjg 1035264 bytes
ooxml_oleobject_00_ole10native_00.bin
d837888f8bebfb33e3a70ae937645ad02ccd29193bb4955bfe519eec17831e44		 ole-package OOXML xl/embeddings/IVF5u8IQ.xCr7Jjg Ole10Native stream: ole10natiVE 1024773 bytes

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