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

Static analysis result for SHA-256 049c2f09d4432715…

MALICIOUS

Office (OLE) / .DOCX

154.4 KB Created: 2020-09-22 12:58:00 Authoring application: Microsoft Office Word
MD5: 213ef2a03e0a0858341dae068ca5e302 SHA-1: 721de2cb0820f4a349da8fc21acaf644eabc218d SHA-256: 049c2f09d4432715871e11695eb82f68cf63a12f8c5dada07ffcb885725279f6
242 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initial execution. The macro uses CreateObject and GetObject calls, indicating it's designed to interact with the system or download additional content. The ClamAV detection further confirms its malicious nature. The VBA code is heavily obfuscated, making it difficult to determine the exact payload or destination, but the overall pattern suggests a downloader.

Heuristics 7

  • ClamAV: Doc.Malware.Ewtz-9765445-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Ewtz-9765445-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
3534612e311adddbcf2e093d61bfa43aa100b688e0fa70d64062312eb6cd9cc9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17155 bytes

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