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

Static analysis result for SHA-256 7252c4f020cd8fe6…

MALICIOUS

Office (OLE) / .DOCX

215.4 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word
MD5: a3213f00000b5df84caee227aef9f2ec SHA-1: 4d094c2f3d1294323f8a67256642c63c3c77e3a7 SHA-256: 7252c4f020cd8fe64a34b006074dec33be448f6e8af40d6c2ac0b89c74bc429b
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file is a Microsoft Office document containing a VBA macro that is automatically executed when the document is opened (Document_Open). The macro utilizes CreateObject and GetObject calls, indicative of malicious activity. ClamAV also detected this file as a generic downloader. The presence of VBA macros and the Document_Open auto-execution strongly suggests the intent to download and execute a secondary payload, aligning with the characteristics of a spearphishing attachment.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764473-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764473-0
  • 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
a72546be4835befa0cd5934bb3d180228dbaffbae6f31f70f11c03f05171f092		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19249 bytes

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