Emotet Office (OLE) / .DOCX malware analysis — malicious · 51a56f76b33ea9e1

MALICIOUS

Office (OLE) / .DOCX

175.5 KB Created: 2020-10-20 21:25:00 Authoring application: Microsoft Office Word

MD5: 8d5badc1be0efd42a3662dee66b27972 SHA-1: 997482bbc51f3ad063cc968ab23d87f60af96bdf SHA-256: 51a56f76b33ea9e1e518f64db6189eb7751b411f7105f65857537015138310d1

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature Doc.Malware.Emotet-9781039-0, indicating a high likelihood of the Emotet family. Critical heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. This suggests the macro is designed to download and execute a second-stage payload. The document body contains obfuscated text, likely a lure to encourage macro execution.

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` `71f866a5571402330f425e0ab90aed18ba72c53599dc9c41907ca6e320ae2301`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18801 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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