Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0c89605ae7e19a71…

MALICIOUS

Office (OLE)

739.0 KB First seen: 2015-09-15
MD5: 002f1b261cff72b6c8b4eac885fc3bc0 SHA-1: e98d46f343060583e17d4f591ca78c2407e3ec07 SHA-256: 0c89605ae7e19a712dbedd67bf9cc0edee8514e24d6e7b725bb696f87c3cffc2
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The critical heuristic firing for 'OLE_XLS_FORMULA_MACRO_VIRUS' and the medium firing for 'OLE_XLM_AUTOOPEN' indicate the presence of legacy Excel 4.0 macros. The presence of 'XL4Poppy' in the document body further suggests this is a known macro-based threat. The macros are likely designed to execute arbitrary code, potentially downloading additional payloads or performing other malicious actions.

Heuristics 2

  • Legacy Excel formula macro virus marker critical OLE_XLS_FORMULA_MACRO_VIRUS
    Workbook stream contains self-identifying legacy Excel formula macro virus markers. This indicates the document carries formula macro virus content even when no VBA project or modern XLM macro-sheet structure is present.
  • 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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