Emotet Office (OLE) / .DOCX malware analysis — malicious · 3990d3ddd544db77

MALICIOUS

Office (OLE) / .DOCX

175.0 KB Created: 2020-10-20 14:16:00 Authoring application: Microsoft Office Word

MD5: 05fb067da1c4606bf712979c37930f7c SHA-1: ca6fe76b51b0ce762a6ec585382fec808cdc3c9b SHA-256: 3990d3ddd544db77ec9f7db002a4003b3fadade6921d821f8fc41fb38c793e14

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 the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro named 'macros.bas' further supports this. The Emotet family is known for using such techniques to download and execute further stages of malware. The document body content appears to be obfuscated or encoded, preventing a clear understanding of its lure, but the macro execution is the primary threat.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
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` `417a16a51c05c178612698fd783ed577ce9b3b76b7f937b9782e824861e12aec`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18804 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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