Emotet Office (OLE) / .DOCX malware analysis — malicious · bf48a449d6878a8a

MALICIOUS

Office (OLE) / .DOCX

174.0 KB Created: 2020-10-27 21:28:00 Authoring application: Microsoft Office Word

MD5: 579e224d0f91d9ce8950d4576eb5fe54 SHA-1: ea1784e64d871d4ff22c756284c6c79b16eb701b SHA-256: bf48a449d6878a8a6776ab0062d4878c02b393d5590758b78c6aea5436e33579

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

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 large VBA macro (macros.bas) and the detection name 'Doc.Malware.Emotet' point to the Emotet family. The macro likely downloads and executes a second-stage payload, a common Emotet delivery technique.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
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` `8e0ab8816d43bd5ad9c1c0011689607d8d62edfed4931a09dce2c4955c56dadb`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16529 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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