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

Static analysis result for SHA-256 9ccd0bce8af2817c…

MALICIOUS

Office (OOXML) / .XLSX

720.9 KB Created: 2010-06-04 08:55:28 UTC Authoring application: Microsoft Excel 15.0300
MD5: c3d88de71a3d1c431ad93ed089a9f7a6 SHA-1: 2f5ebf6b3f5f553420ba63a6cc131273a3df8b1c SHA-256: 9ccd0bce8af2817c0521bb89198f4fb6c049a172a52d3c60271a5e95dc02150d
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 high-confidence indicator of malicious intent, as Equation Editor is frequently exploited to deliver malware. No specific family could be identified from the available heuristics.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/CPxEJ.jp0xqSU 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
81e58254d3e4f6d3961e9eea27351d3cddf50e2d5f84c755291a5046c0b3c5d2		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/CPxEJ.jp0xqSU 968192 bytes
ooxml_oleobject_00_ole10native_00.bin
7d21de9fc6f9efd89dfb88b60b5ac651808367ca89927fa2238842d3f6a9005b		 ole-package OOXML xl/embeddings/CPxEJ.jp0xqSU Ole10Native stream: OLe10NatiVE 958209 bytes

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