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

Static analysis result for SHA-256 08351527dc3368af…

MALICIOUS

Office (OLE) / .DOCX

161.7 KB Created: 2020-09-17 22:23:00 Authoring application: Microsoft Office Word
MD5: 79701e6038a3798eeca4b055202a3a89 SHA-1: 4302b211b2c4b08415b24811e87eccd8ab37bc4e SHA-256: 08351527dc3368afc69b9bf7060a8f5346c318f56212006abec92f731070d67d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute code automatically when the document is opened. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a secondary payload. No specific URLs or network indicators were directly extracted, but the presence of VBA macros and the downloader heuristic points to a common malware delivery technique.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763113-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763113-0
  • 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
98a29bdf4abf669a96318f520c9bfe3aa10e950f57f7c585bdcdcff6e6ad90b2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21952 bytes

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