Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 e6886185d8fca158…

MALICIOUS

Office (OLE)

154.1 KB Created: 2020-09-14 22:09:00 Authoring application: Microsoft Office Word
MD5: 55de46bc158cec9e88f38be26e65e443 SHA-1: 5dd32b47143b3e5d57699a3a0d3b940ed4eb88e1 SHA-256: e6886185d8fca1585bdc84a753479ddfa5c91e129422a964e2510238293b5192
240 Risk Score

Malware Insights

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

The sample contains a high-confidence detection for VBA macros, specifically triggering on a Document_Open auto-execution macro. This macro utilizes CreateObject, indicating it likely attempts to download and execute a second-stage payload. The presence of the 'macros.bas' artifact further supports this. While the exact URL for the payload is not directly extracted, the overall behavior points to a macro-based downloader.

Heuristics 7

  • ClamAV: Doc.Malware.Generic-9760527-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760527-0
  • 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
bf2dc6e4793502154f28a14458af4f5198ccc48932a5641a4c34f7f1fcdc0c82		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18582 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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