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

Static analysis result for SHA-256 5b553de983ac2fa9…

MALICIOUS

Office (OLE) / .DOCX

215.9 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word
MD5: a652650ec5636c944cbeffc184b0d55b SHA-1: fbc98dd41182e62ab125f2fb6d1f842f68bae166 SHA-256: 5b553de983ac2fa97b6d41a6bc545e330a7e725deb81c7d4ebb0e795becacd4e
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample is a Microsoft Office document with a high-confidence detection for VBA macros. The presence of a Document_Open macro, CreateObject, and GetObject calls, along with VBA p-code auto-execution, indicates malicious intent. The script is heavily obfuscated, but the overall pattern suggests it's designed to download and execute a secondary payload, aligning with common downloader tactics.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764473-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764473-0
  • 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.
  • 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
a72546be4835befa0cd5934bb3d180228dbaffbae6f31f70f11c03f05171f092		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19249 bytes

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