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

Static analysis result for SHA-256 bb09897d49a7036f…

MALICIOUS

Office (OLE) / .DOC

66.5 KB Created: 2020-04-14 07:15:43 Authoring application: Microsoft Excel
MD5: 71d2a9689701c8da265dc010b8c20994 SHA-1: 2a9365dd64bf58f6ebac17994c66a7396b70d1d0 SHA-256: bb09897d49a7036f558d7e74388e206f042caf8ee839941d9847ad02dd3a64e7
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an encrypted Excel 4.0 macro sheet, as indicated by the OLE_XLM_ENCRYPTED_MACROSHEET heuristic. This strongly suggests a macro-based attack. The OLE_XLM_AUTOOPEN heuristic further confirms the presence of an auto-executable macro. No document body or script content was available for further analysis, limiting the ability to determine the specific payload or delivery mechanism.

Heuristics 2

  • Encrypted Excel 4.0 macro sheet high OLE_XLM_ENCRYPTED_MACROSHEET
    Workbook contains an Excel 4.0 macro sheet and BIFF FILEPASS encryption. Password-protected XLM macro sheets, especially the default Excel password path, are a common malware evasion pattern because static formula extraction may fail until the workbook is decrypted.
  • 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.