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

Static analysis result for SHA-256 cc56799c484aa100…

MALICIOUS

Office (OOXML) / .XLSX

590.0 KB Created: 2024-03-25 10:30:17 UTC Authoring application: Microsoft Excel 12.0000
MD5: 109d7eb5a5e3415b0af23cfd9740ec34 SHA-1: c5d5afd31408499843cc85fa7fe43c65d7063d30 SHA-256: cc56799c484aa1004ade3054a77e41f466afe40183bb7778aab26d3c1cb4cc73
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The high-severity heuristic firing for 'OLE_EQUATION_EDITOR' indicates the presence of a vulnerable Equation Editor OLE object within the Excel file. This is a common technique used to deliver exploits, often leading to the execution of a second-stage payload. The embedded OLE object itself is the primary indicator of compromise.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/qC.Y6tb 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
5a9e0d6cb3ace0022e7e313cfc845a2e30ab4ff25ad727516a83a9855402f475		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/qC.Y6tb 831488 bytes
ooxml_oleobject_00_ole10native_00.bin
9e945f8f40c43b80f8e34cd83bf379a37fa932ac8cac391fd14bb266b9434a0c		 ole-package OOXML xl/embeddings/qC.Y6tb Ole10Native stream: Ole10Native 822746 bytes

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