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

Static analysis result for SHA-256 27ea142bdbb8854f…

MALICIOUS

Office (OLE) / .XLS

134.0 KB Created: 2015-06-05 18:17:20 Authoring application: Microsoft Excel
MD5: 4e31958084b4e3c2b9baf4654b43955d SHA-1: 0542b1ecedc18a8295edafb32471146c60f1447e SHA-256: 27ea142bdbb8854faad6fd9e8796a8c9dc85ee819c5d76d281177327184f1438
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.005 Visual Basic

The file is a macro-enabled Excel spreadsheet with high-confidence heuristics indicating the presence of Auto_Open and Auto_Close macros. The VBA script, though truncated, suggests an attempt to manipulate the spreadsheet's appearance and potentially execute further actions. The embedded URLs are likely used for downloading and executing a second-stage payload, consistent with a downloader malware family. The ClamAV detection name 'Doc.Downloader.Docusign112100-9908075-0' further supports this assessment.

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://194.36.191.13/
    • http://23.106.122.207/
    • http://101.99.90.115/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0d2f7bbfe3a5094c168f134f24b441e08e62cbdd16423a252e08944181688ba8		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 4951 bytes

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