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

Static analysis result for SHA-256 aabd482cfb8e24b3…

MALICIOUS

Office (OOXML) / .XLSX

711.0 KB Created: 2022-08-10 18:51:50 UTC Authoring application: Microsoft Excel 16.0300
MD5: 5e264320cc605ba3ecd7fa9860f8cf78 SHA-1: ded1582cdfb9e5d36c5e5e4dbac221886edd8ee3 SHA-256: aabd482cfb8e24b332114238dd93937276e64e768afe84edd84f3ac86ae42e5d
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The file is an Excel document containing an embedded OLE object identified as an Equation Editor. This is a common technique used to exploit vulnerabilities or deliver secondary payloads. While no specific script was extracted, the presence of the Equation Editor object strongly suggests a malicious intent, likely to execute arbitrary code upon opening or interaction.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/ha9R.gAgAn 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
bc4a5365a03048a3c9283ea8d86feb33934d792b2ff17623fd2444eff9f9e9a3		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/ha9R.gAgAn 979456 bytes
ooxml_oleobject_00_ole10native_00.bin
edab72c75a48cc3014059694def3cd6e28f93ba67e4f8eb9299db0a365412592		 ole-package OOXML xl/embeddings/ha9R.gAgAn Ole10Native stream: olE10NaTIve 969668 bytes

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