Emotet Office (OLE) / .DOCX malware analysis — malicious · e53072790fadb046

MALICIOUS

Office (OLE) / .DOCX

131.9 KB Created: 2020-10-14 22:05:00 Authoring application: Microsoft Office Word

MD5: 372805068dad9a223c8a8143ecb7ab04 SHA-1: 604bcfe01475275eab5b70795f1bc083c8a300e3 SHA-256: e53072790fadb0467c8ca0ddb901634e878eac42c5ef6e1b3d97ae4e28f42b79

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious macro-based document. The presence of a VBA macro file named 'macros.bas' further supports this. The ClamAV signature 'Doc.Malware.Emotet-9777973-1' directly attributes this sample to the Emotet family. The macro likely downloads and executes a secondary payload, a common Emotet behavior.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9777973-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9777973-1
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` `9296410b78ac92b55714bdfa954afbb0bd00efb2266f225f69af6657d47bd2de`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	9460 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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