Emotet Office (OLE) / .DOCX malware analysis — malicious · b43a90a9419496e8

MALICIOUS

Office (OLE) / .DOCX

157.8 KB Created: 2020-10-20 04:30:00 Authoring application: Microsoft Office Word

MD5: 139b21d13ed76939c787a7d8b07c55e8 SHA-1: 4e0245238d790e18e9f070c5231c9946a7d1c214 SHA-256: b43a90a9419496e8219b18fa155a8e8acf13fabeb0acae9f1dcd4bf1c820a0f8

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file contains a "Document_Open" VBA macro that utilizes CreateObject to execute code. This macro is designed to automatically run upon opening the document, indicating a downloader or droppper functionality. The ClamAV detection explicitly identifies this as "Doc.Downloader.Emotet-9780400-0", strongly suggesting the Emotet family. The macro's execution of arbitrary code is the primary attack vector.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9780400-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9780400-0
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` `bec182db065394791f950a49edfb2bfa66cb6693b62758841681c782964c8b6d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15615 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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