Emotet Office (OLE) / .DOCX malware analysis — malicious · cf37bc70aa99bf4d

MALICIOUS

Office (OLE) / .DOCX

191.0 KB Created: 2020-10-27 20:26:00 Authoring application: Microsoft Office Word

MD5: f388b7db6e52c336f27f6f7c0324ebbf SHA-1: 80fced62a3b924bc9738e154937807c7143ad920 SHA-256: cf37bc70aa99bf4d8ac44a3ded10f1d82deac713ad88ca9aa9f6f550ccf52f2c

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9784450-1'. Static analysis detected VBA macros, specifically a Document_Open macro that uses CreateObject, indicating an auto-execution mechanism. The presence of obfuscated VBA code and the Emotet family attribution strongly suggest the macro is designed to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
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` `557610d73c449d90b5a2aabccaaf95f7a5897df031246bc03a17cf1b86e2503b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16372 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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