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

Static analysis result for SHA-256 f2b98a436c70291a…

MALICIOUS

Office (OOXML) / .XLSX

730.7 KB Created: 2022-08-10 18:51:50 UTC Authoring application: Microsoft Excel 16.0300
MD5: 350cd564458f74a1315b4134fe930774 SHA-1: ae6fffac68060648fd8d95447fe294bc30112c14 SHA-256: f2b98a436c70291ac484574332f6683696039a6f53130bd683e11c70b099005f
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The file is an Excel spreadsheet containing an embedded OLE object. The high-severity heuristic 'OLE_EQUATION_EDITOR' specifically identifies this object as an Equation Editor object, a common vector for exploiting vulnerabilities to execute arbitrary code. The presence of this object strongly suggests the document is intended to deliver a malicious payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/va.qeq5 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
a99628d985616ed8dd7b23e90b0e063b765883f41487dfcf468df96039a7b22e		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/va.qeq5 1002496 bytes
ooxml_oleobject_00_ole10native_00.bin
4e5d7741b1dd201f7d66a3ca9b0ee38450044f8684fdb2b0ce3310c6ed727759		 ole-package OOXML xl/embeddings/va.qeq5 Ole10Native stream: OLe10natIve 991771 bytes

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