Emotet Office (OLE) / .DOCX malware analysis — malicious · 4ff0538fabf7a4ae

MALICIOUS

Office (OLE) / .DOCX

151.4 KB Created: 2020-10-01 07:06:00 Authoring application: Microsoft Office Word

MD5: 0d293b27589e9ff8238eecba298cd6cd SHA-1: af153dc9de9bbdf94c1f1971f2276f6128923c63 SHA-256: 4ff0538fabf7a4ae34ed9add6662255b9f8b7b92cd7903aefbe364e99f81cf5b

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 malicious intent. The presence of the 'macros.bas' file further supports this. The Emotet family is identified due to the specific detection signature and common Emotet delivery patterns involving macro-laden documents. The macro likely downloads and executes a secondary payload, a common Emotet tactic.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9770156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9770156-0
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` `edcbc228f949e002f32423fcc2aae89e10357cf04ecc19d5df06e1df6cb28a25`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10406 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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