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

Static analysis result for SHA-256 bee2d4cf49938684…

MALICIOUS

Office (OLE) / .XLS

199.5 KB Created: 2020-10-13 20:45:26 Authoring application: Microsoft Excel
MD5: 07cc6d8444361083195b672f8735e48d SHA-1: 0f102865f269c7e4d992d4b929be747f1db462b9 SHA-256: bee2d4cf499386849c0e47d181895d6c7b703236e41326d671e2a04aaacde314
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 OLE_XLM_AUTOOPEN heuristic further suggests that macros are present and likely intended to execute automatically. The document body is unreadable, but the presence of encrypted macros strongly suggests a malicious intent, likely to download and execute a secondary payload.

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.