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

Static analysis result for SHA-256 2d5220a30ebb6a73…

MALICIOUS

Office (OLE) / .DOCX

266.5 KB Created: 2020-10-28 13:40:00 Authoring application: Microsoft Office Word
MD5: 53831742813db4e02ff063d00c2e2e10 SHA-1: e78d7d49fb888543ebb66ef4c27c503e7dbd1219 SHA-256: 2d5220a30ebb6a737f6b0b5622f7fe68238d39bd2a66a6bca4591b96160c1ed4
240 Risk Score

Malware Insights

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

The file contains a malicious VBA macro, specifically a Document_Open macro that uses CreateObject to execute. This is indicative of a downloader. The ClamAV detection 'Doc.Downloader.Generic-9785156-0' further supports this. No specific family could be identified, but the macro's execution suggests it attempts to download and execute a second-stage payload.

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
04f0b14197f396c9b03f7b934599b1b01d62a486cd3090375b867094895917c9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18531 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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