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

Static analysis result for SHA-256 ba077d2123afef8f…

MALICIOUS

Office (OOXML) / .XLSX

698.7 KB Created: 2022-08-10 18:51:50 UTC Authoring application: Microsoft Excel 16.0300
MD5: 2f7be0cda6cf282dec302bf78ce37338 SHA-1: 5a1367fd1b115793d931b1ce059d436f0a430b7c SHA-256: ba077d2123afef8f4bfa8a6173f29d62614bbb72f40ac8bdf34520457dd4fcdc
60 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The file is an Office document containing an embedded OLE object. The high-severity heuristic 'OLE_EQUATION_EDITOR' specifically identifies this object as an Equation Editor, a common vector for exploiting vulnerabilities like CVE-2017-11882 to achieve arbitrary code execution. The document body appears to be a purchase order, likely a lure to entice the user to open and interact with the malicious embedded object.

Heuristics 2

  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Embedded OLE object xl/embeddings/UDQUL8TB.dJvLhVL 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
abefff281fecb66d07d58703875576a81ce59520765b3c967f3ea3e893391a9e		 ooxml-ole-object OOXML embedded OLE part: xl/embeddings/UDQUL8TB.dJvLhVL 1034752 bytes
ooxml_oleobject_00_ole10native_00.bin
0017d059e8034afb7fa127e198f2f0c263fa1498ac4188cee62765447f0fe416		 ole-package OOXML xl/embeddings/UDQUL8TB.dJvLhVL Ole10Native stream: OLE10NaTIvE 1024326 bytes

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