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

Static analysis result for SHA-256 859ea99ec200187d…

MALICIOUS

Office (OLE) / .DOCX

160.5 KB Created: 2020-09-23 12:48:00 Authoring application: Microsoft Office Word
MD5: 1200812276ba04899aea9c00d69aba56 SHA-1: 24b521e5781be2d6c09bde52ab0ba098e3a0fafb SHA-256: 859ea99ec200187dd001774f9b4c19d4b22e900fe6a2acbc1a2e3caad4914489
240 Risk Score

Malware Insights

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

The file contains a malicious VBA macro, specifically a Document_Open auto-execution macro. This macro is designed to create an object and execute code, likely to download and run a secondary payload. The ClamAV detection 'Doc.Downloader.Generic-9765533-0' further confirms its downloader capabilities. No specific malware family could be identified.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9765533-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9765533-0
  • 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
b40b6439e0e94acfcf6292a727f89f3b7b0e2a6faeddd230541e1164d0603753		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19346 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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