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

Static analysis result for SHA-256 ecb5ecfc5b282643…

MALICIOUS

Office (OLE) / .XLS

134.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 90da0c2ab6fd1b12eeeaafbce0693dba SHA-1: f1562363f37b19f5957742763c8e242c8fcac27f SHA-256: ecb5ecfc5b28264383e2fb771c167bb5dc5fce19d9239b9cdf509b1921ccecd7
162 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The file is an Excel spreadsheet containing VBA macros, with both Auto_Open and Auto_Close macros detected. The ClamAV detection name '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 malware family could be confidently identified from the available 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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