Emotet Office (OLE) / .DOCX malware analysis — malicious · 9646ac232319549f

MALICIOUS

Office (OLE) / .DOCX

180.5 KB Created: 2020-10-21 10:22:00 Authoring application: Microsoft Office Word

MD5: 2ee80b760814938e1338727e7d656912 SHA-1: ae9bbec1765400315de2bafb05be6fc036b2219c SHA-256: 9646ac232319549f504b079167907cfd4ae36c7c67d9143770cf6fc7a953b57a

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and multiple high-severity OLE VBA heuristics, including `OLE_VBA_DOCOPEN` and `OLE_VBA_PCODE_AUTOEXEC_EXEC`, strongly indicate a malicious macro dropper. The presence of a `Document_Open` macro that uses `CreateObject` is a common pattern for Emotet. The ClamAV signature specifically names 'EmotetiBlueUpdate1020', further supporting the family attribution. The document body content is heavily obfuscated and unreadable, but the heuristics confirm the macro's intent to execute.

Heuristics 7

ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
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` `2d652a5f62c7cd7db265ab6f01298582724932c4485a1fde21ad075960ba4c72`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20722 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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