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

Static analysis result for SHA-256 9f20d4c02cc0a17c…

MALICIOUS

Office (OLE) / .DOCX

212.8 KB Created: 2020-09-21 12:09:00 Authoring application: Microsoft Office Word
MD5: 1bbeb4b1a5604ecda40dca4495295d21 SHA-1: edb72bd2e745ef52f242ac73190d0ec5de51e1de SHA-256: 9f20d4c02cc0a17cab07b9dd439952f5b036ebe4e1b1adf6bfd639386ce05eae
280 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject and GetObject calls. This indicates the macro is designed to execute arbitrary code upon opening the document. The ClamAV detection as 'Doc.Downloader.Generic' further supports its malicious nature as a downloader. No specific family could be identified, but the techniques used are common for initial stage malware delivery.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764508-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764508-0
  • 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.
  • 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
cea30dbaa44bcaf57fbcd15c35be69cfffbad74d3b69c3addc059acf5ad797f9
vba-macro oletools.olevba.extract_macros (decoded VBA source) 19026 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.