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

Static analysis result for SHA-256 be2d4c496cf0ef15…

MALICIOUS

Office (OLE) / .DOC

106.0 KB Created: 2021-01-12 09:22:00 Authoring application: Microsoft Office Word
MD5: d1922fb0576a35685056100529409ba5 SHA-1: 915dd7eda2986caf202cd43e0a7da58c501c2be8 SHA-256: be2d4c496cf0ef1523ef648817368ef1555e043f9147252c332558515f560691
340 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1204.002 Malicious File

The sample is a malicious DOC file containing a Document_Open macro that utilizes WScript.Shell and CreateObject to execute arbitrary code. This strongly suggests the macro is designed to download and execute a second-stage payload. While no specific URLs were found to be malicious, the presence of these critical VBA heuristics indicates a downloader or dropper functionality.

Heuristics 9

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
ddc155d083230037fd702a084529be2f79441cd2458ccc8f0fcef09d13cffc30		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 32675 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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