Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 6e5a237d9da69487…

MALICIOUS

Office (OLE)

692.5 KB Created: 2020-07-08 08:53:56 Authoring application: Microsoft Excel First seen: 2020-09-07
MD5: e831a772b7c320e2dddbe6f336fa45b9 SHA-1: c1413b860ac40c11b0a768f58b5a510ce2173f6e SHA-256: 6e5a237d9da69487ffff817b7ffb44000be5112546e8e8ae0a1d0f803aad8ca1
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an Excel document identified as malicious due to the presence of encrypted Excel 4.0 macros. The heuristics indicate that these macros are likely designed to execute arbitrary code, a common technique for malware delivery. No specific family could be identified, and no IOCs were extracted from the document body or scripts.

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.

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