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

Static analysis result for SHA-256 cfb063f4941a5cb9…

MALICIOUS

Office (OLE) / .DOC

155.0 KB Created: 2019-04-17 07:57:00 Authoring application: Microsoft Office Word
MD5: 465b5f5bc210807d76e4097faa514c2c SHA-1: e0aa3bc707935e0f9453bee9b19eb4a485aaa40b SHA-256: cfb063f4941a5cb9a6839ab562df96961c4865ec5058960bcac0b17219dffc02
200 Risk Score

Malware Insights

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

The file is a malicious OLE document containing a VBA macro. The presence of an AutoOpen macro and a GetObject call indicates that the macro is designed to execute automatically when the document is opened. The ClamAV detection further confirms its malicious nature. The macro likely downloads and executes a second-stage payload, although the specific details are obfuscated.

Heuristics 6

  • ClamAV: Doc.Malware.00536d-6944243-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.00536d-6944243-0
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
df551280ffee78f758eb450bd420ad3932f3c696fb848d0fb2cab723c968b3be		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 28581 bytes

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