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

Static analysis result for SHA-256 ac7d65c53ac9da80…

MALICIOUS

Office (OLE) / .DOCX

84.1 KB Created: 2020-12-30 06:48:00 Authoring application: Microsoft Office Word
MD5: 5ce4f9a028d6e1f2fa70a0916ca5baa8 SHA-1: 1e79d0332d3d88aa4630ee43a064559639326685 SHA-256: ac7d65c53ac9da8059cb8118ae879da7ba83283998376c23e3b8edc1bd8610c1
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic for Applications T1059.001 PowerShell T1547.001 Registry Run Keys / Startup Folder

The sample contains a Document_Open VBA macro that utilizes CreateObject to execute code. This macro is designed to download and execute a second-stage payload. The presence of auto-execution tokens and the CreateObject call strongly indicate malicious intent. The obfuscated document body text does not provide further context on the lure.

Heuristics 6

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject 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
f392ec7de4bc91e9168573ed3554ded1ffa8839807d0d22211a4c7f8e84a6f24		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6590 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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