Emotet Office (OLE) / .DOCX malware analysis — malicious · 43302ab823d78926

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 6b2c1d97d3204da7fef4f300903326ea SHA-1: 19d9335ac0b473c9e21f2a3c79b726f43e76f7b5 SHA-256: 43302ab823d78926b1d6c64d95d04cbb45c97d5d8128ffe8eacb17bf0ed2ed24

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including Document_Open auto-execution and CreateObject calls, strongly indicate a malicious downloader. The presence of a VBA macro named 'macros.bas' further supports this. The document body's obfuscated content does not provide direct clues, but the overall pattern is consistent with Emotet's typical delivery mechanism of using macro-enabled documents to download and execute further stages.

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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