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

Static analysis result for SHA-256 02836be5c9124bd4…

MALICIOUS

Office (OLE) / .DOCX

214.6 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word
MD5: 4b0fc7828f0f11d3a8ef2752fe82f274 SHA-1: f4facbe1724de858c8b518a7400841fe3d05902a SHA-256: 02836be5c9124bd4ba54a0f55a760d8b275599f13e41dd2adb1a1c55a690c80f
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 strong indicator of malicious intent. The heuristics indicate the use of CreateObject and GetObject, common for downloading and executing payloads. ClamAV also flagged this as a downloader. The VBA script appears to be obfuscated, but its structure suggests it attempts to download and execute a second-stage payload.

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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