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

Static analysis result for SHA-256 0fdfd0bf5a70dcd3…

MALICIOUS

Office (OLE) / .DOCX

150.3 KB Created: 2020-09-24 10:05:00 Authoring application: Microsoft Office Word
MD5: 57e85491cdb1f8be6d179464a09695db SHA-1: 0ed64c108b554a05c382d6843ffac57f16c4b8d4 SHA-256: 0fdfd0bf5a70dcd3c4f8f8c8fca5f034d855255ee1cdd4aa4e9a477ac4329362
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The macro appears to be obfuscated, but the presence of VBA and the heuristic firing for PowerShell execution indicate an attempt to download and run a second-stage payload. The embedded URL is benign, but the overall behavior is indicative of a downloader.

Heuristics 6

  • ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
  • 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
b39e572cf96864edb4f5c39daa3a8388f74111156690860ca53002be67bbf3ff		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20583 bytes

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