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

Static analysis result for SHA-256 0cacb466a5cd5476…

MALICIOUS

Office (OLE) / .DOCX

258.9 KB Created: 2020-10-29 09:30:00 Authoring application: Microsoft Office Word
MD5: 0c987098d14dc95346ccabd3dc0bc492 SHA-1: a53f502fbecd29d903f566c82c6856478310a3f3 SHA-256: 0cacb466a5cd54765f2b551a75b8b0880cd991d16fd662402d00efc578060da7
202 Risk Score

Malware Insights

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

The sample is a Microsoft Office document containing VBA macros, specifically triggering a Document_Open auto-execution macro. The presence of CreateObject calls and the ClamAV detection as a downloader strongly suggest malicious intent. The VBA script appears to be obfuscated, but its structure indicates it's designed to execute further actions, likely downloading a second-stage payload.

Heuristics 6

  • 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.
  • 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
2c8aded1cc33908777d3554a19067d8f93ed6d8269cc13dcdcff33eca45ebd5f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18919 bytes

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