Emotet Office (OLE) / .DOCX malware analysis — malicious · ad477afdea97a221

MALICIOUS

Office (OLE) / .DOCX

168.3 KB Created: 2020-09-28 19:59:00 Authoring application: Microsoft Office Word

MD5: 5b84ff77c8edca08171257d64bfaa156 SHA-1: 3d1885557a81353a16091682593fa88288d76abf SHA-256: ad477afdea97a221878ddff802a9efad5559f7b83f41d0f4bc7f35d29cfcab97

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS, OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate a malicious macro-based document. The presence of a Document_Open macro that uses CreateObject is a common Emotet delivery technique. The macro is designed to download and execute a secondary payload, as evidenced by the heuristic 'Suspicious extracted artifact' and the ClamAV signature. The document body content is obfuscated and does not provide direct clues to the lure.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9768661-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9768661-0
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` `387c5ef7909231ea8caee5f9881fb86538a4be7f74672ee227b824bdfa4a7d92`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6701 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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