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

Static analysis result for SHA-256 21d04923646a76b5…

MALICIOUS

Office (OLE) / .DOC

250.6 KB Created: 2020-01-14 15:34:00 Authoring application: Microsoft Office Word
MD5: b8345801f0d77370c2922323c3a49706 SHA-1: 20e6e908911cb7759981907160d2cb84a0725ed1 SHA-256: 21d04923646a76b547634c8a0596f71724d457757948ed372592e976df871126
200 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing embedded VBA macros, specifically a Document_Open macro that utilizes GetObject. This combination strongly suggests an attempt to automatically execute malicious code when the document is opened. The ClamAV detection as 'Doc.Dropper.Generic' further supports this, indicating a dropper functionality. The embedded URL, though benign, is noted as present in the document text.

Heuristics 6

  • ClamAV: Doc.Dropper.Generic-7535928-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Generic-7535928-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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
18ed7d2155f6e21744c157e8ba03893d8c7093b3aba197c1b4302cf2b6f800b4		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 12864 bytes

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