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

Static analysis result for SHA-256 b08aefe593abf5f8…

MALICIOUS

Office (OOXML) / .XLSX

741.8 KB Created: 2023-07-26 19:45:53 UTC Authoring application: Microsoft Excel 12.0000 First seen: 2023-07-28
MD5: c94a73a0f5f26abdd5b7e518c078e529 SHA-1: 37cbc6c6380662854fb12d0b032a3d61d276d524 SHA-256: b08aefe593abf5f8456900b0853d9b906fe9a21702387ff60244f05342cf6037
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The primary finding is the presence of an embedded OLE object identified as an Equation Editor. This is a high-severity heuristic indicating a likely exploit attempt, commonly used to deliver malicious payloads. No document body or scripts were extracted, limiting further analysis of the specific payload or delivery mechanism.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/tMXf.Gn74 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
970264c93355061925557932b0b9c8423e649c99fa2cedd1f7ca2890b1fb5f12		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/tMXf.Gn74 1042944 bytes
ooxml_oleobject_00_ole10native_00.bin
825b76d20e4d90836fac0b3d14abe68432264c33cd770e76adabf7ae5970308e		 ole-package OOXML xl/embeddings/tMXf.Gn74 Ole10Native stream: OlE10NAtiVe 1032698 bytes

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