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

Static analysis result for SHA-256 50659dd03345c5b1…

MALICIOUS

Office (OOXML) / .XLSX

733.1 KB Created: 2023-08-03 11:34:29 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2023-08-24
MD5: 80e6097461cd82991b69946d8054f48d SHA-1: fd97abbc16fc30c09d7ea6b66ec359b9d9017b19 SHA-256: 50659dd03345c5b16d6ea45170d63ca5a1846019634b06b4e37a3b97b65f1a36
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The sample is an Excel file containing an embedded OLE object identified as an Equation Editor. This is a common technique used to exploit vulnerabilities in the Equation Editor component to execute arbitrary code. The presence of this object strongly suggests a malicious intent, likely to deliver a secondary payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/6WWUYd.2mcOnQ 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
0ce517d3c1cc4976c7718dd884ee43c9e77db94080fe40f4d01c039db69de1eb		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/6WWUYd.2mcOnQ 1082880 bytes
ooxml_oleobject_00_ole10native_00.bin
007710dc7976219987d046769bdf8e4d1836d213081178114736a4413898880b		 ole-package OOXML xl/embeddings/6WWUYd.2mcOnQ Ole10Native stream: OLe10NATIve 1071886 bytes

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