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

Static analysis result for SHA-256 55f9b507acd2ee7d…

MALICIOUS

Office (OLE) / .XLSX

62.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 578955e7fde0737ce544df8e6d04bd35 SHA-1: 637ae926536812c5ab261ae0540a8114c4a0baa9 SHA-256: 55f9b507acd2ee7d2f4e66fe6696ff673024d183a11c4f84f63011e7088213c9
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample contains an Excel 4.0 macro sheet, which is a strong indicator of malicious intent. The document body explicitly impersonates DocuSign and instructs the user to enable macros, a common social engineering lure. The presence of multiple URLs suggests the macro is designed to download and execute a second-stage payload.

Heuristics 3

  • Excel 4.0 (XLM) macro sheet present medium OLE_XLM_AUTOOPEN
    Workbook contains an Excel 4.0 macro sheet sub-stream — XLM is rarely seen in modern legitimate workbooks and was a major Office malware vector during 2020-2022.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context

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