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

Static analysis result for SHA-256 3d0e327579a0412b…

MALICIOUS

Office (OLE) / .DOCX

175.0 KB Created: 2020-09-17 20:07:00 Authoring application: Microsoft Office Word
MD5: b0cc816e28b848d20f876efa0d8ae0d6 SHA-1: ddf982aea83a51241e002cecfe45c9efde3cb411 SHA-256: 3d0e327579a0412b41e40642776caf0be54df0872df9e9ce553e048802249ac0
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 auto-exec macro that utilizes CreateObject. This indicates the document is designed to execute arbitrary code upon opening. The presence of 'macros.bas' as an extracted artifact further supports this. The ClamAV detection 'Doc.Downloader.Generic-9763054-0' strongly suggests a downloader functionality, likely to fetch and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9763054-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763054-0
  • 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
620e9eb15c32ed012e3e43742d6a5833fa906ea09e2bf7ca9f4f384d7210c8d6
vba-macro oletools.olevba.extract_macros (decoded VBA source) 21992 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.