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

Static analysis result for SHA-256 42132bfa40efa076…

MALICIOUS

Office (OLE) / .XLS

185.0 KB Created: 2020-11-09 01:17:08 Authoring application: Microsoft Excel
MD5: 93f0058532aaa3f5b0665f15226d87a8 SHA-1: c8b6d56a6a84b47097385ca0593e0d5a3d604634 SHA-256: 42132bfa40efa0763b8ddec71b6dbe8dce30109398a22a90899372d8794e6f6d
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 OLE_XLM_AUTOOPEN heuristic suggests it is designed to execute automatically upon opening. While no specific URLs or scripts were extracted, the nature of encrypted macro sheets strongly implies a malicious intent, likely for payload delivery.

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.