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

Static analysis result for SHA-256 917291b862e0556f…

MALICIOUS

Office (OLE) / .DOCX

179.0 KB Created: 2020-09-18 08:59:00 Authoring application: Microsoft Office Word
MD5: 9254f516663fc419ed040083de281861 SHA-1: 3c48407acd01c4339e9d6c02f25473e7e08777eb SHA-256: 917291b862e0556f8d98d9dcae320d8b6d9307ee1978e2c8ddf0608cfb87ad85
240 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Generic-9763419-0. Critical heuristics indicate the presence of VBA macros, specifically a Document_Open auto-exec macro that utilizes CreateObject. This suggests the macro is designed to download and execute a second-stage payload. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9763419-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763419-0
  • 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
2cacffa870bc163e0d80063dbad890b2628b581c624e40730ba57a6c44f2b3d2
vba-macro oletools.olevba.extract_macros (decoded VBA source) 20834 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.