Office (OOXML) / .XLSX malware analysis — malicious · 6a94e8eaaa10d032

MALICIOUS

Office (OOXML) / .XLSX

1.09 MB Created: 2006-09-16 00:00:00 UTC Authoring application: Microsoft Excel 12.0000

MD5: 36a47ac43e18edc49e7433882c6b8b82 SHA-1: 91b13d548b329451bc72e6227c8ab7d6c34e25c5 SHA-256: 6a94e8eaaa10d0324ccb099fcaba42420078047bbb72195de2e6a94be9ec0706

62 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is an Office Open XML spreadsheet containing an embedded OLE object, specifically identified as a Microsoft Equation Editor object. This type of object is known to be vulnerable to code execution exploits. The presence of the Equation Editor OLE object strongly suggests an attempt to leverage a known vulnerability for arbitrary code execution.

Heuristics 3

Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Embedded OLE object xl/embeddings/z3y03GTTu.MHKWvtx 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
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin` `05adfce09ac6df72f8656da2d5bb8fd256f92ce5aea751478309984265a8e86b`	ooxml-ole-object	OOXML embedded OLE part: xl/embeddings/z3y03GTTu.MHKWvtx	1378304 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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