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

Static analysis result for SHA-256 c90e0037db29ff6e…

MALICIOUS

Office (OOXML) / .XLSX

815.7 KB Created: 2020-06-30 06:04:05 UTC Authoring application: Microsoft Excel 15.0300
MD5: f4bf8b0bdcd2420fb0025dfbf7bcbeb7 SHA-1: 71bffeab8a736369f68c22ec0a4fe11221ba9532 SHA-256: c90e0037db29ff6e17677f1ce96855f17681d8d9755ac8addc1d75fe4a08200c
60 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The file is an Excel document containing an embedded OLE object identified as an Equation Editor. This is a common technique used to disguise and deliver malicious code, often exploiting vulnerabilities within the Equation Editor itself. The presence of this object strongly suggests an attempt to execute a secondary payload.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/Shy5A1p.iklLxVJ 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
983c297d6b96b4eae63a9ea8d848f4d9a5ec12e01e58c3be6482968c9f5b3262		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/Shy5A1p.iklLxVJ 967168 bytes
ooxml_oleobject_00_ole10native_00.bin
9cb65f100af54db8dba22fb83195dace4d70e859e69b65395adce0f4bce41f1e		 ole-package OOXML xl/embeddings/Shy5A1p.iklLxVJ Ole10Native stream: oLE10nATIvE 957328 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.