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

Static analysis result for SHA-256 cff1af4ff195bf06…

MALICIOUS

Office (OLE) / .DOC

163.5 KB Created: 2022-03-15 21:21:00 Authoring application: Microsoft Office Word First seen: 2022-03-18
MD5: e6a015023d37aa0ba6ec3f3f44b9a63e SHA-1: 52f16af36543d56fa6928f7ba96d955df04b38eb SHA-256: cff1af4ff195bf06d4da85eeab5806edc7ec29682633dd27bd0b29495ff6d3db
162 Risk Score

Malware Insights

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

The sample contains a VBA macro that executes a ShellExecute API call upon opening the document. The macro's Document_Open subroutine is designed to call a function that likely attempts to open a URL. This indicates a delivery mechanism for a malicious payload. The presence of the Document_Open macro and the ShellExecute reference strongly suggest an attempt to execute code or redirect the user to a malicious site.

Heuristics 6

  • Reference to ShellExecute API high SC_STR_SHELLEXEC
    Reference to ShellExecute API
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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
  • Suspicious extracted artifact medium 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.
  • 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://ns.attribution.com/ads/1.0/
    • http://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
1c042b770a0ed5471240f05e6c5f0724cc2abfbd019785f6282f564420dee60e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8711 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 shell/COM execution token(s).

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