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

Static analysis result for SHA-256 7b2d140ba3e0b4d4…

MALICIOUS

Office (OOXML) / .XLSX

596.4 KB Created: 2022-08-10 18:51:50 UTC Authoring application: Microsoft Excel 16.0300
MD5: 1ae6847360fe3bb54193d6009b0c024c SHA-1: 9a1b6a797a07ed45ca653f961837f8cd0a8d181c SHA-256: 7b2d140ba3e0b4d4314218b60f89e57491385f357a277d8caed2c2d950383739
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The file is an Excel spreadsheet containing an embedded OLE object identified as an Equation Editor. This is a common technique used to deliver exploits, often leveraging vulnerabilities within the Equation Editor component to execute malicious code. The document body content appears to be financial or order-related data, likely a lure.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/aT4.FO 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
204e8e209de5d205ccbae121bcc43864b213664c73f4ac4a4c5e12692ffe0ff0		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/aT4.FO 821760 bytes
ooxml_oleobject_00_ole10native_00.bin
d97c2ef1bd370488327e1504d33c90cca8a3d1b8600da8d8f12b0673af7f558d		 ole-package OOXML xl/embeddings/aT4.FO Ole10Native stream: OlE10NAtiVe 812631 bytes

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