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

Static analysis result for SHA-256 75e37e5c3591743a…

MALICIOUS

Office (OLE) / .DOCX

195.5 KB Created: 2020-09-18 21:15:00 Authoring application: Microsoft Office Word
MD5: b37a66934c79f06c18ea02808e1168ec SHA-1: 4c16574857d837a077c764f3816ffbff846e9140 SHA-256: 75e37e5c3591743af109482748f2a48e550f1a9d767316a8cece66fb4fe8c222
202 Risk Score

Malware Insights

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

The sample contains VBA macros, including a Document_Open macro that utilizes CreateObject, indicating malicious intent. The ClamAV detection name 'Doc.Downloader.Generic-9763611-0' strongly suggests the macro's purpose is to download and execute a secondary payload. The VBA code is heavily obfuscated, making it difficult to determine the exact download URL or execution method.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763611-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763611-0
  • 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
27aa07f405fa9b3280133cc26ba8fa4c11df7235c7ef1a37f33a0286291c2144		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19156 bytes

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