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

Static analysis result for SHA-256 b145e0c635aa6139…

MALICIOUS

Office (OLE) / .DOC

200.0 KB Created: 2020-09-21 06:43:00 Authoring application: Microsoft Office Word
MD5: 556570cb444f869089f57026af55afe0 SHA-1: ad319d253cd18a812dbfa618fd144be2bf4703ca SHA-256: b145e0c635aa613978a7070db65f10fad2d90576cabdfb4d62551c931ad83b45
280 Risk Score

Malware Insights

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

The presence of VBA macros, specifically a Document_Open auto-exec macro, indicates malicious intent. The heuristics suggest the macro uses CreateObject and GetObject, common for downloading and executing secondary payloads. The ClamAV detection as 'Doc.Downloader.Generic' further supports this. No document body text was available for analysis, but the macro's behavior is indicative of a downloader.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764468-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764468-0
  • 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
7169cbbf5de322d778ca9a77dc58bcf8bb22a6f6d4bfec64dbfa06bc63509b99		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19229 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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