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

Static analysis result for SHA-256 3e8e7d38cdddd4f7…

MALICIOUS

Office (OLE) / .XLS

182.5 KB Created: 2020-11-09 01:15:26 Authoring application: Microsoft Excel
MD5: d2a8dce156275dc034e86c2bb65a63ce SHA-1: 308b31bec11b3ca291a7f9f790efc47949b5cd1a SHA-256: 3e8e7d38cdddd4f7c00974e3c72c5b3753b62daf593e17f156ac3d3b631cfeda
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an encrypted Excel 4.0 macro sheet, indicated by the OLE_XLM_ENCRYPTED_MACROSHEET heuristic. The presence of an auto-open macro (OLE_XLM_AUTOOPEN) suggests that the malicious code is designed to execute automatically upon opening the spreadsheet. The document body is heavily obfuscated and unreadable, preventing further analysis of its specific intent.

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.

Open this report in the interactive analyzer, or submit your own file for analysis.