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

Static analysis result for SHA-256 101fd6ac0d16e831…

MALICIOUS

Office (OLE) / .DOCX

176.1 KB Created: 2020-09-28 12:01:00 Authoring application: Microsoft Office Word
MD5: 87b605fdda5e63c051267a79f6d2d2cc SHA-1: 7474265f13061e53a4c70601f760473bc6295286 SHA-256: 101fd6ac0d16e8311173436f83f9486238d80008cb3d59a1b292a882f1254230
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is a malicious Office document containing a VBA macro. The macro is triggered by the Document_Open event and uses CreateObject to execute code. This behavior is consistent with a downloader that fetches and executes a second-stage payload. The ClamAV detection also confirms its malicious nature.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9768640-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9768640-0
  • 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
41d5da1c3b5ac37936783dc0f6deb9a466b44f4833e7f3cfb69b25cedc4e48ca		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6262 bytes

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