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

Static analysis result for SHA-256 74c1fc2f43a4a426…

MALICIOUS

Office (OLE) / .DOCX

216.5 KB Created: 2020-09-21 20:39:00 Authoring application: Microsoft Office Word
MD5: d989e333fc45838ea4661ded52adbaa4 SHA-1: eff763a6dce7262e5bf2635ef8b795a19430ae23 SHA-256: 74c1fc2f43a4a426a9f4ffbc4738e6107d95009d67a202f0c8a2a1b80ef60937
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is a Microsoft Office document containing a large VBA macro. The 'Document_Open' macro is present and configured to execute automatically, indicating an attempt to run malicious code as soon as the document is opened. The presence of 'CreateObject' and 'GetObject' calls further suggests the macro is designed to interact with the system or download additional payloads. ClamAV also identified this as a downloader.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764666-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764666-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
6d2f50f334b8e082813c694e310720d341c184a4af51360bc43b61318b8ab2c5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19051 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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