Emotet Office (OLE) / .DOCX malware analysis — malicious · f182b904afbc1ef5

MALICIOUS

Office (OLE) / .DOCX

241.5 KB Created: 2020-10-28 10:47:00 Authoring application: Microsoft Office Word

MD5: fc4ebdbdd9a4c76a221e7250ce11b44d SHA-1: d3c545efbb6b40c29b101c2d5e845446efa47468 SHA-256: f182b904afbc1ef53c949d93d3826ccca716a9f32529f6df10ca170703089e7c

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9784450-1'. Static analysis revealed the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject' for execution. This indicates the document is designed to automatically run malicious code when opened, a common tactic for Emotet. The macro source size and the 'p-code auto-exec with execution tokens' heuristic further support this. No specific URLs or other IOCs were extracted beyond the ClamAV signature.

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` `46faaf06a16ada9e49d018565258705c67fc1202bb8b7fa1b6772e3ca9589e8c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17107 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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