Emotet Office (OLE) / .DOCX malware analysis — malicious · f38ba2670a04e3c2

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 2067963f7493e1c66035ef989f47513a SHA-1: d12f656e863013ce02f4b4c60faa3675b4fcbd46 SHA-256: f38ba2670a04e3c24f92f2c3f297965173a26100ea6cfde46a97fce906c8788f

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically an auto-executing Document_Open macro that uses CreateObject, strongly indicate Emotet. The presence of the macros.bas file further supports this. The macro is designed to download and execute a second-stage payload, which is a common Emotet delivery technique.

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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