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

Static analysis result for SHA-256 4770af47f362fe57…

MALICIOUS

Office (OLE) / .DOCX

158.8 KB Created: 2020-09-17 16:56:00 Authoring application: Microsoft Office Word
MD5: f7de60e0ae835bc93d70458aca2cd9a4 SHA-1: e0a575de2beff14c3c48efef773f38bc9b1f97b4 SHA-256: 4770af47f362fe576ac4c2d71279b7a29792bbb3ee0fc9a386e0f37d301706a0
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1059.001 PowerShell

The file contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The critical ClamAV detection and high-severity heuristics for CreateObject and p-code auto-execution further support this. The macros likely download and execute a second-stage payload, as suggested by the 'Doc.Downloader' classification.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9763026-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763026-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
d72f45ff27ad6de46c4e2f18d1cb6c13c4a0c6682629fccb5d0be1c4ab69db7a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19870 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 20 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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