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

Static analysis result for SHA-256 3d8acda767d9d7d9…

MALICIOUS

Office (OLE) / .XLS

59.0 KB Created: 2020-04-27 23:19:44 Authoring application: Microsoft Excel
MD5: 1295bdd106c5a7264d73d20c884dcc60 SHA-1: 77f3ecbdff0276f2816b9579f543ed66604300cc SHA-256: 3d8acda767d9d7d9db19a9e641d732a933745b0ae47119950a459c10b46b47e6
60 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample is an Excel 4.0 macro sheet, identified as encrypted and containing an auto-open macro. This strongly suggests it's designed to execute malicious code upon opening. The encrypted nature and lack of readable document body text indicate a deliberate attempt to obscure the payload. The primary attack vector is likely a spearphishing attachment.

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.