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

Static analysis result for SHA-256 77ff70910d2a9ae3…

MALICIOUS

Office (OOXML) / .XLSX

688.1 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300
MD5: 8ce9adfd453c8835eebe6398c362f1e6 SHA-1: 74feb139c32062bac5541144080a878f5724a315 SHA-256: 77ff70910d2a9ae3df0ae802485701e180ebe13aead3fb3cadb36a7dced05af8
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model and Distributed Component Object Model

The high-severity heuristic firing for an Equation Editor OLE object strongly suggests this XLSX file is designed to exploit a vulnerability within the Equation Editor component. This is a common technique for delivering secondary payloads, although no specific payload or exploit details were extracted from this sample.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/18R.SZBq3 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
abd2448f7dc2e4500acc66579e3bb8a9c098ba52afb72bd320a5a8d5f41cbf1a		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/18R.SZBq3 992768 bytes
ooxml_oleobject_00_ole10native_00.bin
71e51710e62c15540f9d2a300532f77533f804c7a58603e7bd90df68a545e06a		 ole-package OOXML xl/embeddings/18R.SZBq3 Ole10Native stream: olE10naTIvE 982206 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.