Emotet Office (OLE) / .DOCX malware analysis — malicious · 590a71911d6c9978

MALICIOUS

Office (OLE) / .DOCX

171.8 KB Created: 2020-10-02 08:05:00 Authoring application: Microsoft Office Word

MD5: 2d3137dd6e44e4f40423eaffecc0c609 SHA-1: 3c8a09b01b3b5448edff0c8a23c2393e25359cbf SHA-256: 590a71911d6c9978060bbb9bac79e91ab0f74c01327ee5a42b323a4238d19c4d

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 CreateObject and auto-execution via Document_Open, strongly indicate malicious intent. The presence of VBA macros, specifically an auto-executing Document_Open macro that uses CreateObject, is characteristic of Emotet's delivery mechanism. The ClamAV signature further confirms this family. The document body appears to be obfuscated base64, likely containing further malicious code or instructions.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `7051a023ff8c92545e9437031d326fa9393a821a4be28f0566a57a8f3610dd93`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10600 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 53 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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