Emotet Office (OLE) / .DOCX malware analysis — malicious · efb4167bc0cff354

MALICIOUS

Office (OLE) / .DOCX

146.1 KB Created: 2020-09-30 13:54:00 Authoring application: Microsoft Office Word

MD5: c3428dd023f7e98fecbb7d6c9c5f8699 SHA-1: dc24f2a044d220b70d07854fc7b2e49e9300360d SHA-256: efb4167bc0cff354c12bf008da6ffdd636d608141a89d9c77f85c40b28dcd31f

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically an auto-executing Document_Open macro and CreateObject calls, strongly indicate malicious intent. The presence of VBA macros, particularly an auto-executing one, suggests the document is designed to download and execute a secondary payload. The ClamAV signature specifically names Emotet, a known banking trojan and downloader.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9769801-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9769801-1
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.

Filename	Kind	Source	Size
`macros.bas` `b0a96d5f70fa37f74dd6926b04c01f24a02f2a82bef41b3183b9207cf3a20fca`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10253 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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