Office (OLE) / .DOCX malware analysis — malicious · 7490d5daf3c56c38

MALICIOUS

Office (OLE) / .DOCX

158.4 KB Created: 2020-09-17 16:56:00 Authoring application: Microsoft Office Word

MD5: fd163fd0b0aa803c715030cf78a7da22 SHA-1: 2ff1779e30cc96d2f3f483d479cc0ee710d12a1e SHA-256: 7490d5daf3c56c388a7b35e4e502e9d4be4f6b6c286666a73219664d3db95449

204 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute code automatically when the document is opened. The ClamAV detection 'Doc.Downloader.Generic-9763026-0' strongly suggests the macro's purpose is to download and execute a secondary payload. No specific malware family could be identified from the available evidence.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763026-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763026-0
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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact info 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.
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.

Filename	Kind	Source	Size
`macros.bas` `d72f45ff27ad6de46c4e2f18d1cb6c13c4a0c6682629fccb5d0be1c4ab69db7a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19870 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 20 long base64-like blob(s).

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