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

Static analysis result for SHA-256 5c9595da8f021c0e…

MALICIOUS

Office (OLE) / .DOCX

195.3 KB Created: 2020-09-18 21:15:00 Authoring application: Microsoft Office Word
MD5: 17e604f9113ca34a5cd87ca4cccd1ebc SHA-1: ce7e33130d128f172089eab7065d53aab3746f35 SHA-256: 5c9595da8f021c0eb6c4da08ddfff0b280e4b1f2c7b0c9a1908f8c5bd98163e4
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 auto-execution macro, which is a common technique for initiating malicious actions upon opening the document. The presence of CreateObject calls further suggests the execution of arbitrary code. While the specific payload is not directly visible, the macro's structure and the ClamAV detection indicate it functions as a downloader for a second-stage payload. The embedded URL, though benign, is noted.

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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