Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 e8ceae7785f60cbd…

MALICIOUS

Office (OOXML)

12.4 KB Created: 2018-03-14 13:56:47 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2020-05-14
MD5: a5a9fd748deba7d9ad473d3ba245529f SHA-1: b894d4272915ada3826b22f6f78de0c6e98902c2 SHA-256: e8ceae7785f60cbdec20063393272a0adc2952540178de05571a4ed53b7cd117
100 Risk Score

Heuristics 3

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/oleObject1.bin contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
  • CVE-2018-0798 — anomalous Equation Editor native stream high CVE likely CVE_2018_0798_EQUATION_NATIVE_ANOMALY
    Embedded Equation Editor OLE data contains anomalous native stream bytes consistent with a CVE-2018-0798-style Equation Editor exploit. This is treated as likely CVE evidence because the Equation object is malformed and payload-like, but it does not match the exact public matrix-overflow byte signature.
  • 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 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/oleObject1.bin 4096 bytes
SHA-256: dd25bb747a7a8724282bfcb4ba7ca62fb614e1b736835eb9ecd128f58193be26
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML xl/embeddings/oleObject1.bin Ole10Native stream: Ole10nATIVe 1856 bytes
SHA-256: 21d97959e4508943e344e9574ac7878b1dde01feda19493be14abd9459153129

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