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

Static analysis result for SHA-256 2ce0b1b64893c2e1…

MALICIOUS

Office (OLE) / .DOCX

266.0 KB Created: 2020-10-28 13:40:00 Authoring application: Microsoft Office Word
MD5: d5073c2cbfca9c8b3d4f7039434d1cb3 SHA-1: 78ce99ad68685e04c563169baac82c0ee94832ba SHA-256: 2ce0b1b64893c2e1bc8708ef881ff4d10eecb5ca1599b25d67e7f20f9cf64eb8
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. This is a common pattern for malware downloaders. The ClamAV detection 'Doc.Downloader.Generic-9785156-0' further supports this assessment. No specific malware family could be identified, but the macro's auto-execution and use of CreateObject strongly indicate it's designed 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.