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

Static analysis result for SHA-256 8a06b0b219f81d58…

MALICIOUS

Office (OLE) / .DOC

183.4 KB Created: 2019-12-20 12:36:00 Authoring application: Microsoft Office Word
MD5: fa854fb97b2506c23dabd812795f91e0 SHA-1: ca4c7320e53e4bf8d154b28087825a986a431d92 SHA-256: 8a06b0b219f81d581a52c6d22e570c4e41180fdec65f1d33d7c5bbe8530fe370
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The file is a Microsoft Word document containing VBA macros. The presence of a Document_Open macro, combined with a GetObject call and VBA p-code execution, indicates that malicious code is designed to run 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 second-stage payload. No specific family could be identified, but the delivery mechanism is clear.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-7469762-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-7469762-0
  • 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
d0844ef7b32133ef07fde84d5acd81b4b90e55e7250312c6bd74e6c9fcd45973		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 7699 bytes

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