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

Static analysis result for SHA-256 ba2a5b8eafb313f7…

MALICIOUS

Office (OOXML) / .XLSX

2.15 MB Created: 2026-05-27 17:22:24 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2026-06-08
MD5: d5d48cf5c888aaa89550a34bdce2563f SHA-1: 0e4761ff0865b038f2e0db14f1ef9203ee74f088 SHA-256: ba2a5b8eafb313f7dd0f73b86b3da289b69b50bc8474c75bd2fa66367bc0cd28
140 Risk Score

Heuristics 4

  • CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882
    Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/mDIZADzd.ym 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 medium 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.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: xl/embeddings/mDIZADzd.ym 2976256 bytes
SHA-256: 3228d367c72a89b4dafbcbd339b0eda021b07018042b57d85ae381e596a66807
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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