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

Static analysis result for SHA-256 2d6a5431e6115815…

MALICIOUS

Office (OLE) / .DOCX

213.7 KB Created: 2020-09-21 12:09:00 Authoring application: Microsoft Office Word
MD5: d5c92e835d10f068e177b971ac1690ec SHA-1: 7ec1bdbf683ebeb1da3651ae00911fd38ebe679b SHA-256: 2d6a5431e61158153fef1258729585f1e960289a985c131147dee0f8918b40f0
280 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is a Microsoft Office document with a high-confidence detection for VBA macros. Specifically, the 'Document_Open' macro is present and uses CreateObject and GetObject calls, indicating it's designed to execute code. The ClamAV heuristic 'Doc.Downloader.Generic-9764508-0' strongly suggests a downloader functionality. The presence of VBA auto-execution with execution terms further supports the conclusion that the macro is intended to download and execute a second-stage payload.

Heuristics 8

  • ClamAV: Doc.Downloader.Generic-9764508-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764508-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
cea30dbaa44bcaf57fbcd15c35be69cfffbad74d3b69c3addc059acf5ad797f9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19026 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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