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

Static analysis result for SHA-256 009081468aa09b40…

MALICIOUS

Office (OLE) / .DOCX

175.3 KB Created: 2020-09-17 20:07:00 Authoring application: Microsoft Office Word
MD5: 7ca4228dd9cc14b1b5d9938c6ed1b144 SHA-1: fb014a7813256c848e97007a7705f355bcf40576 SHA-256: 009081468aa09b402378444010fd772036dbefb92c839179c69cdbcb23133a33
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The sample contains a VBA macro that is automatically executed via the Document_Open subroutine. This macro utilizes CreateObject to likely download and execute a secondary payload, as indicated by the ClamAV detection name 'Doc.Downloader'. The obfuscated script makes it difficult to determine the exact download URL or payload, but the overall intent is clear.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763054-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763054-0
  • 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
620e9eb15c32ed012e3e43742d6a5833fa906ea09e2bf7ca9f4f384d7210c8d6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21992 bytes

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