Emotet Office (OLE) / .DOCX malware analysis — malicious · e8374c78d55e4b8d

MALICIOUS

Office (OLE) / .DOCX

182.4 KB Created: 2020-10-30 14:06:00 Authoring application: Microsoft Office Word

MD5: b6435c11ebef464b7c788a6e2ad950bd SHA-1: d43b74a7ab119be2ed3161b2a1140cc8c280ec69 SHA-256: e8374c78d55e4b8d5f616d2dc977d646370d57ecc9d3b8cc51a11d138a8bb13a

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a 'macros.bas' file further supports this. The Emotet family is a common association for such macro-based document threats. The primary attack vector is likely a spearphishing email with this malicious document as an attachment, leveraging the auto-executing VBA macro to download and execute a secondary payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9785300-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9785300-0
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.

Filename	Kind	Source	Size
`macros.bas` `953bcc7800f8e12231199058de4be56a41e5df3186000111c4b5440de64866f2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17395 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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