Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 107905bca523acd6…

MALICIOUS

Office (OOXML)

66.0 KB Created: 2006-09-16 00:00:00 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2019-09-30
MD5: 710eb7a235554fefec2e88e6135f9c40 SHA-1: e33a08ab57e0932ea5ca8f106dfc6e0e1667355c SHA-256: 107905bca523acd6ee98290f9c2941618bdd23ba0ebbfca85f4c82104746d0ac
180 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical ClamAV heuristic 'Doc.Exploit.CVE_2017_11882-6934206-0' strongly indicates exploitation of the CVE-2017-11882 vulnerability. This vulnerability is present in Microsoft Equation Editor, which is embedded as an OLE object within the document. Successful exploitation allows for arbitrary code execution.

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.
  • ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
  • Embedded OLE object medium OOXML_OLE_OBJECT
    Document contains an embedded OLE object

Extracted artifacts 1

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: f5f8c8405607d78091a1c2df3e9fb3a39c91adb1709a5cbb9a4d083ace8f09f1
Detection
ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0
Obfuscation or payload: unlikely

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