Emotet Office (OLE) / .DOCX malware analysis — malicious · e55b497502188dc8

MALICIOUS

Office (OLE) / .DOCX

161.8 KB Created: 2020-09-25 11:29:00 Authoring application: Microsoft Office Word

MD5: 2d83e635e2c166abe01deff29ab18483 SHA-1: 0c4ab948de83be1413ed0a41bcb4fa5adcab8746 SHA-256: e55b497502188dc8b8da281b3a2e03550c1ff2299b5d45e61f51502706652bcb

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.001 PowerShell T1059.005 Visual Basic 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 VBA macro (macros.bas) and the embedded URL suggest a downloader mechanism. The document body, though heavily obfuscated, appears to contain encoded PowerShell commands, which are likely used to fetch and execute a secondary payload, a common Emotet tactic.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9767804-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9767804-1
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` `426aca538f654441d66e245a00bfc928dacf37832bbf946df52799fa3650ecb1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	24489 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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