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

Static analysis result for SHA-256 5eacf1a93cb041fa…

MALICIOUS

Office (OLE) / .XLS

233.5 KB Created: 2020-09-24 19:34:15 Authoring application: Microsoft Excel
MD5: 8ce379a4a34d25fc101038583ad3349a SHA-1: a16f6500e7126c0efcaae7de818ee7a69378e32a SHA-256: 5eacf1a93cb041fa4efb9bfd6fb7ce1b9197478b56915a9230bd088becd9c0a3
60 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is an Excel 4.0 macro sheet that is encrypted, which is a strong indicator of malicious intent. The presence of an 'AUTOOPEN' macro further suggests that malicious code is intended to run automatically when the file is opened. No specific family could be identified due to the encryption and lack of further script details.

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.