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

Static analysis result for SHA-256 769d88abb73a098b…

MALICIOUS

Office (OLE) / .DOCX

156.6 KB Created: 2020-12-30 07:47:00 Authoring application: Microsoft Office Word
MD5: 1aa0b797a22ac1778772d729abc7db1a SHA-1: 3105c5f9e6065b6881a97e9ffb54c87b48fa1350 SHA-256: 769d88abb73a098b9c851ff44003f58390fd4fe2c1c78d2a1eeea4fd571c762b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The script uses CreateObject to interact with the file system, attempting to create several files with obfuscated paths. This behavior strongly suggests the macro is designed to download and execute a secondary payload. The ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' further supports this assessment.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
9bf607663b8a2bf6d5409ee86f6e92f88c816fbcbd12854fba6197389a76ce81		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6567 bytes

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