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

Static analysis result for SHA-256 6702a0e6521a8ed5…

MALICIOUS

Office (OLE) / .DOCX

165.5 KB Created: 2021-01-22 08:32:00 Authoring application: Microsoft Office Word
MD5: 9eef7e81209e2d32af123ea28fd70605 SHA-1: 6adefbb84a34c9e405839bea6db5bafc2aaa4ed5 SHA-256: 6702a0e6521a8ed55cf85690c9c58dccc01fbb19ebe830af78769ac8f17a1dab
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute malicious code upon opening the document. The ClamAV detection 'Doc.Malware.Emodldr-10033991-0' further confirms its malicious nature. The VBA script is heavily obfuscated, but the presence of auto-execution and object creation strongly suggests it's designed to download and execute a secondary payload, characteristic of a macro-based downloader.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033991-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033991-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
aca9316956f3c2042a2002b787c0059c1e5a646e44f317e6951449e0af5acb97		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16802 bytes

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