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

Static analysis result for SHA-256 5d9ea64e57564b3e…

MALICIOUS

Office (OLE) / .DOCX

210.4 KB Created: 2020-09-21 19:39:00 Authoring application: Microsoft Office Word
MD5: 48f773d78bce93f1bf7737273cfc6c04 SHA-1: d58e1eec45ed038db05220f3461216807616b622 SHA-256: 5d9ea64e57564b3e412eb44aa61235c5b1cb4d677aa5089910f9a5f1c6e6b1bc
242 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 and GetObject calls, along with the ClamAV detection as a downloader, strongly suggests that the macro is designed to download and execute a secondary payload. The specific URL 'http://schemas.openxmlformats.org/drawingml/2006/main' was extracted but flagged as benign, indicating the actual malicious URL might be dynamically generated or obfuscated within the script.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764637-0
  • 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.
  • 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
4078e425aac0675c0d67424bcd647792033cab09565190ea70103f9b942a9f1f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19109 bytes

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