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

Static analysis result for SHA-256 020a3cde4d47dde1…

MALICIOUS

Office (OLE) / .DOCX

164.3 KB Created: 2020-10-20 08:13:00 Authoring application: Microsoft Office Word
MD5: c2f5b1d4d52ae69906187f7ea14fc7da SHA-1: 2f52dabe2f9a94babc83df6ecfe8983524d9e8f1 SHA-256: 020a3cde4d47dde10e420186a163ff2f23b6fddc17a041341b7741553a775f40
202 Risk Score

Malware Insights

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initial execution. The VBA code is heavily obfuscated but the presence of CreateObject and the overall structure strongly suggest it's designed to download and execute a secondary payload. The ClamAV detection as 'Doc.Trojan.Agent' further supports this assessment.

Heuristics 6

  • ClamAV: Doc.Trojan.Agent-9781037-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Agent-9781037-0
  • 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
8eb6ba0866f4c6c9ad4d97b0723246709e3ca63ed0491e35acc3191e90884d63		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17541 bytes

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