Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 df6b949ad9a8154c…

MALICIOUS

Office (OOXML)

22.5 KB Created: 2010-06-04 08:55:28 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2019-03-18
MD5: 7c69792735ec7fe8a02da723fc0fbd16 SHA-1: ec50115efadef2681bb8d95a52cb69e42c3b884f SHA-256: df6b949ad9a8154cd734313ca3ac89de01c01044d967f7453aa52bee23fdd9d1
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an OOXML document containing an embedded OLE object, specifically identified as an Equation Editor object. This strongly suggests exploitation of a known vulnerability within the Equation Editor component to achieve arbitrary code execution. The embedded object is the primary indicator of malicious intent, likely serving as a dropper for a secondary payload.

Heuristics 2

  • 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.
  • 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 4608 bytes
SHA-256: 7cc7cc68c9f66970f516d77734948ef00484015220a826e6dbb699e62d4e653c
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML xl/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 2056 bytes
SHA-256: df6a0f1b71606b837542d177d743ee259805d92d66da72a0031db9135c5cb12f

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