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

Static analysis result for SHA-256 6393adce2e6fe641…

MALICIOUS

Office (OLE) / .DOCX

175.1 KB Created: 2020-09-28 21:56:00 Authoring application: Microsoft Office Word
MD5: 5d3bf56aed4fcffc8d48b1bf1150f246 SHA-1: 73e1352178d1d16398539b9c745184b64d415a8b SHA-256: 6393adce2e6fe6411ce0d55abdc750cf798b4d5e95ac789d82fa303e456ff200
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1204.002 Malicious File

The file contains a VBA macro that is automatically executed upon opening, indicated by the 'Document_Open' macro and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The macro uses 'CreateObject' and obfuscated code to likely download and execute a secondary payload. The presence of a VBA macro and the auto-execution heuristic strongly suggest a malicious document designed to deliver further malware.

Heuristics 6

  • ClamAV: Doc.Malware.Generic-9769001-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9769001-0
  • 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
fe19635e7383e285d173bce1f5bbd9867258f7974e3830e10aecb187a337391c		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6691 bytes

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