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

Static analysis result for SHA-256 324337642923507f…

MALICIOUS

Office (OLE) / .DOC

162.4 KB Created: 2020-09-23 21:50:00 Authoring application: Microsoft Office Word
MD5: 5139c90a9c0e2a757e867172a47373d2 SHA-1: bda3d7ab51072f5dd3f5bc9dd251d64c296e85eb SHA-256: 324337642923507f95f8882431a523b118e670bec80dc82ea989321c6abd2e37
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 Word document containing a high-severity VBA macro that automatically executes upon opening. ClamAV identified this as Doc.Downloader.Mryv-9765643-0. The presence of CreateObject and p-code auto-execution strongly suggests the macro is designed to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Downloader.Mryv-9765643-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Mryv-9765643-0
  • 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
73025ddea320f2b071eb07bf918853ac1d6bc1ed1503c9c9400830c79e2af1db		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19787 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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