Emotet Office (OLE) / .DOCX malware analysis — malicious · a04eec7be461e708

MALICIOUS

Office (OLE) / .DOCX

161.8 KB Created: 2020-09-24 14:59:00 Authoring application: Microsoft Office Word

MD5: e1effc2985361de7f87bd50d0cac714f SHA-1: 56c2c597039d633db2a751b93a27137471680ef2 SHA-256: a04eec7be461e708f8df91a5118fe261a5a18b6ab866ce9a032631ba8fca505a

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic 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 malicious intent. The presence of a VBA macro file named 'macros.bas' further supports this. The document body, though heavily obfuscated, appears to contain encoded strings that likely form a PowerShell command, suggesting the macro's purpose is to download and execute a second-stage payload. This aligns with the known behavior of the Emotet family.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
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` `478e525c35da71173721eac25da86734da83f0768f80b277d373c9cc7716a5ba`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	27607 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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