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

Static analysis result for SHA-256 ccf1bbb3de959885…

MALICIOUS

Office (OLE) / .DOC

243.3 KB Created: 2020-01-15 22:37:00 Authoring application: Microsoft Office Word
MD5: afaf2852d162dda465b62644310fc931 SHA-1: 548592d58d56a16005894001cae074e059820f60 SHA-256: ccf1bbb3de95988595cc8f85473e954ae197fcb5fc567ed54e98b3daf5d2c9af
200 Risk Score

Malware Insights

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

The file is a malicious DOC document containing a Document_Open VBA macro. This macro is designed to execute automatically when the document is opened, leveraging the GetObject call. The ClamAV detection name 'Doc.Malware.Chartres-7540846-0' strongly suggests a known malware variant. The primary intent appears to be the execution of malicious code, likely for downloading and executing a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Malware.Chartres-7540846-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Chartres-7540846-0
  • 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
5c25959b38cab32ecf4cb36bf088a8cc5fafd65893f3fd86ea4e5d35830fa2e6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10988 bytes

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