Emotet Office (OLE) / .DOCX malware analysis — malicious · e8b19723225167f1

MALICIOUS

Office (OLE) / .DOCX

173.0 KB Created: 2020-10-27 18:11:00 Authoring application: Microsoft Office Word

MD5: e51dfe340172038139f9011f7d126cc1 SHA-1: 970a2509f22f30e43e395809346be1db2abaa616 SHA-256: e8b19723225167f1b831cdfd075a80a02537306d5d73af68da53d7dd4fd27229

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro in the macros.bas file, combined with the auto-execution heuristic, suggests the script is designed to run automatically when the document is opened. This is characteristic of Emotet's delivery mechanism, which often uses macro-enabled documents to download and execute further stages of malware.

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` `89a7392bd1c1f3fe3b1a4c5e97fc737fc9e550b299f3eb72f43817655c9c1c0c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16436 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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