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

Static analysis result for SHA-256 9cdf4102c45c7f54…

MALICIOUS

Office (OLE) / .DOC

242.5 KB
MD5: 3b9fe096a2873c0633043d9de83733a8 SHA-1: f8d43ef654beb4e5ca6d19e92bd90c2aedb31da3 SHA-256: 9cdf4102c45c7f549ee4e0290a07d4f7783c6371b1a8fe35a6f1f04d56cd6857
240 Risk Score

Malware Insights

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

The sample is a malicious DOC file containing a large VBA macro. Heuristics indicate the macro uses CreateObject and an auto-execute function (Document_Open), strongly suggesting it's designed to download and execute a second-stage payload. The ClamAV detection as a generic downloader further supports this. No specific family could be identified, but the technique is common for initial access.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • 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
53c940c9e61b86bba3a049505972bd865d71f0e7c155177329bd8613b2e4028a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18779 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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