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

Static analysis result for SHA-256 75ce7197683d85ac…

MALICIOUS

Office (OOXML) / .XLSX

735.5 KB Created: 2023-08-28 00:48:10 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2023-08-28
MD5: a136c026581b08648a9cfc2d7cc5ccef SHA-1: ca00363386ffb5f9c6c2d685c2f4c72de567865d SHA-256: 75ce7197683d85acdc6ab2dfc57de56d252112ca924e22e030571a118910a17f
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an OOXML file identified as malicious. Static analysis revealed an embedded OLE object, specifically an Equation Editor object, which is a common technique for exploiting vulnerabilities or delivering secondary payloads. The presence of this object is the primary indicator of malicious intent.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/BdRo.od 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
08266cf1c5282b20b845bc77985fe3937532bc36c914df083728595700c3bbf0		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/BdRo.od 1051136 bytes
ooxml_oleobject_00_ole10native_00.bin
f06371f34517a5c2c7eaa87b0908f3531832d6301a65a54c2d9aab33dc847f9d		 ole-package OOXML xl/embeddings/BdRo.od Ole10Native stream: OlE10natIve 1040113 bytes

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