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

Static analysis result for SHA-256 ee252ad162575677…

MALICIOUS

Office (OOXML) / .XLSX

2.52 MB Created: 2025-09-04 00:14:20 UTC Authoring application: Microsoft Excel 12.0000
MD5: 01a54cd1f6b0ac92928bc7459d51c32d SHA-1: ec5e0aaa9151184f5363166e619af7954f62c080 SHA-256: ee252ad162575677a384d0fd5f874ea3d29ee2ef79247628eb9af99335d65d7f
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059.005 T1059.005

The file is an Office document containing an embedded OLE object, specifically identified as an Equation Editor object. The heuristic 'SE_ENABLE_LURE' indicates that the document instructs the user to enable macros or editing, a common tactic for malware droppers. This suggests the embedded object is intended to be executed upon user interaction, likely to download and run a secondary payload. No scripts were extracted, and the document body was truncated, limiting further analysis of the specific lure.

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/UFtFV8.vusxhgR 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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin
bdbc566ce54183778b0a5aab7923670d1df17389407f25220b662c296629aba1		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/UFtFV8.vusxhgR 2962944 bytes

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