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

Static analysis result for SHA-256 b460fd4a13b0c733…

MALICIOUS

Office (OLE) / .DOC

144.3 KB Created: 2021-01-05 07:06:00 Authoring application: Microsoft Office Word
MD5: e4520fc9d821e4e0afcf9fcb7e267a45 SHA-1: 43a3b9b99c4f260c8569a80acc291c038735731b SHA-256: b460fd4a13b0c733e918797c55a11229326c6d16ca792e3704e65d9ded459fcc
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The file contains a malicious VBA macro that is automatically executed upon opening the document. This macro utilizes CreateObject to execute arbitrary code, likely to download and run a second-stage payload. The presence of the Document_Open macro and the p-code auto-execution with execution tokens strongly indicate malicious intent.

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
d3b097275af7032178b4c001ca8fbb5e7bf0f68c090585141a79334ce9cb0a60		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10798 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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