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

Static analysis result for SHA-256 bcc87762e3390583…

MALICIOUS

Office (OOXML) / .XLSX

2.50 MB Created: 2025-09-04 00:14:20 UTC Authoring application: Microsoft Excel 12.0000
MD5: 64d7297c8b523e049eb7bc9b231ed63c SHA-1: 299feb4dfefd098289d1fec8ec867c488f44351c SHA-256: bcc87762e3390583153ae09df1f32614a1c5488808febe2b72f252892adf2196
80 Risk Score

Malware Insights

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

The file is an Office document that contains an embedded OLE object, specifically identified as an Equation Editor object. The heuristic 'SE_ENABLE_LURE' indicates that the document likely instructs the user to enable macros or editing, a common tactic for malware droppers. This suggests the document's primary purpose is to trick the user into enabling malicious content, which would then likely download and execute a second-stage payload.

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/CeNi36Ct.q9lMNGY 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
26afe1104f65169b226df9d65ff2a0502d3f1af53c4c10a2430a584f1c9303e9		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/CeNi36Ct.q9lMNGY 3063296 bytes

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