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

Static analysis result for SHA-256 d285ea691c4ccf35…

MALICIOUS

Office (OLE) / .DOCX

258.7 KB Created: 2020-10-29 09:30:00 Authoring application: Microsoft Office Word
MD5: 89a5235ee5c2574a55fdd202f3644450 SHA-1: 5c84d98f08ce93f3ad0760e6f3be9ae157653e47 SHA-256: d285ea691c4ccf35668c9aeb1166e56bea695d95174c38282af932e47157a46d
240 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically an auto-executing Document_Open macro and CreateObject calls, indicate malicious intent. The presence of VBA macros suggests the document is designed to exploit macro execution vulnerabilities. The Document_Open macro is likely responsible for downloading and executing a second-stage payload, as indicated by the 'Doc.Downloader' classification.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
  • 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
2c8aded1cc33908777d3554a19067d8f93ed6d8269cc13dcdcff33eca45ebd5f
vba-macro oletools.olevba.extract_macros (decoded VBA source) 18919 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.