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

Static analysis result for SHA-256 8d96dec2c8372099…

MALICIOUS

Office (OLE) / .DOCX

161.9 KB Created: 2020-09-14 06:53:00 Authoring application: Microsoft Office Word
MD5: bf81fff5c01140faee97a5f8c1528f59 SHA-1: d2d944b8cf6519d695275cc7255ea7c72b4bfa87 SHA-256: 8d96dec2c837209904a891baadfa94f3fdb0eaf45cba68a76c0e232a7b2ee1c2
240 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open macro that uses CreateObject to execute a PowerShell command. This PowerShell command is designed to download and execute a second-stage payload from the URL 'http://192.168.1.10:8080/a9'. The ClamAV detection further confirms the malicious nature of the file as a downloader.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9759966-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9759966-0
  • 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
5ce8e3049c7f7471ddec53dc1ba306c342ff4bf35831c96fefacef04b22bd0d5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 25165 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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