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

Static analysis result for SHA-256 04562540df54956b…

MALICIOUS

Office (OLE) / .XLS

142.5 KB Created: 1996-10-14 23:33:28 Authoring application: Microsoft Excel
MD5: ed576af4afbf5a313e74ab8cd10df64f SHA-1: 79167de87513367f4fa7196b36bb344309d11531 SHA-256: 04562540df54956b73b4f57c0cd77ca2412454b9e4a2596bffd4ffc8eeaa7a0a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1547.001 Registry Run Keys / Startup Folder

The file is an Excel spreadsheet containing a VBA macro that executes upon opening (Auto_Open). The macro attempts to copy itself to the Excel startup directory as 'StartUp.xls' and configures application event handlers to maintain persistence. This behavior is indicative of a macro-based malware designed to establish a foothold on the victim's system.

Heuristics 3

  • ClamAV: Doc.Macro.Laroux-5893719-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Macro.Laroux-5893719-0
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
8453c458711ffd8a6bce16e5ad373a21a2ceb25b73fbfc9d8a562bd71de53b69		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 3710 bytes

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