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

Static analysis result for SHA-256 e491465f796f2a80…

MALICIOUS

Office (OLE) / .XLS

134.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel First seen: 2021-10-11
MD5: c4a9d5acf85fb8b73f99563c30475bdd SHA-1: 86107b0b930adaee0faa419ee700fae44c7414a7 SHA-256: e491465f796f2a80be0d7cc944825521b523dc1a351357935ffcf32c13305757
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is an Excel spreadsheet containing VBA macros, including an Auto_Open subroutine, which is a common technique for executing malicious code upon opening. The ClamAV detection 'Doc.Downloader.Docusign112100-9908075-0' strongly suggests a downloader functionality. The embedded URLs are likely used to fetch and execute a secondary payload. No specific family could be identified from the provided heuristics and script content.

Heuristics 5

  • ClamAV: Doc.Downloader.Docusign112100-9908075-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Docusign112100-9908075-0
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://190.14.37.238/
    • http://5.196.247.5/�
    • http://94.140.115.118/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
82f9ea84a47774711cea5a3dfab141bccbdd4d96155b8209783ccc6bb1cf8498		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4951 bytes

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