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

Static analysis result for SHA-256 14cb7ccb4d185e3f…

MALICIOUS

Office (OLE) / .DOC

173.5 KB Created: 2017-07-17 00:15:00 Authoring application: Microsoft Office Word
MD5: cec1b318cac278e94ca60a5eecec6e52 SHA-1: 3fb4c08b23fc06c8d498ba7e7e61209d8050cffc SHA-256: 14cb7ccb4d185e3f32b1ed5cb42e106e277f6c3d8f2cf70890635c44e8d65d5e
222 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample is a malicious Microsoft Word document containing a VBA macro that executes upon opening. The macro utilizes a Shell() call, indicating an intent to run arbitrary commands, likely for downloading and executing a secondary payload. The presence of a Document_Open macro and the Shell() call strongly suggest a downloader or droppper functionality.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Doc.Downloader.Heuristic-6312759-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Heuristic-6312759-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
    • http://ns.adobe.com/photoshop/1.0/
    • http://www.iec.ch
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
0f6f52c38915b0e2a888eb9acad96bc02210734f37dd1b1752a816a403a636b9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 24015 bytes

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