Emotet Office (OLE) / .DOCX malware analysis — malicious · cfeb18e60913b48e

MALICIOUS

Office (OLE) / .DOCX

154.7 KB Created: 2020-10-19 12:20:00 Authoring application: Microsoft Office Word

MD5: 37a642330ee314a46c5ad4f47fddb96e SHA-1: 1f4555006c636ac7884a62b99eef98360bb796e0 SHA-256: cfeb18e60913b48ee28948d2fc7770a7292d72f0f42e0c16a6cb1d8a0526fa23

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, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate Emotet activity. The presence of a VBA macro in the 'macros.bas' file, combined with the auto-execution of the Document_Open macro, suggests the primary function is to download and execute a second-stage payload. The document body appears to be heavily obfuscated binary data, further supporting the malicious nature.

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` `1b934c7a6a945d183f556fc460816db0116e14a6233b4c84dca18770500f607e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15515 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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