Emotet Office (OLE) / .DOCX malware analysis — malicious · 99a5a23e91e9bf15

MALICIOUS

Office (OLE) / .DOCX

101.5 KB Created: 2020-09-29 17:52:00 Authoring application: Microsoft Office Word

MD5: b6530946cea1fa3a5d1276852ffe5562 SHA-1: a4f2737933621fff178f5ccd8a05d2f8745804c6 SHA-256: 99a5a23e91e9bf15c0228052277496c6f12cdde681956526917f46550eb08c8c

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9769356-0', indicating a known Emotet downloader variant. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject, strongly suggesting it's designed to run malicious code upon opening. The obfuscated document body content does not provide direct insight into the lure, but the combination of the ClamAV signature and the macro execution pattern points to a downloader functionality.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9769356-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9769356-0
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` `77f0fc2bd0d5c985be4d4cb3501afb191ffadc98be204ef2c40c091585c5d90a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10395 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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