Emotet Office (OLE) / .DOCX malware analysis — malicious · 58dd14b9873993e3

MALICIOUS

Office (OLE) / .DOCX

196.5 KB Created: 2020-10-21 19:03:00 Authoring application: Microsoft Office Word

MD5: 8f625ec9328b1e0eb21a24c438f0bb26 SHA-1: 98e81a994c2524686e60f543e14e1d4b8b399602 SHA-256: 58dd14b9873993e348c4ddb26836d43f01fd619f9d56f694f752a5a9db63aa60

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 a malicious dropper. The presence of VBA macros and the detection name 'EmotetiBlueUpdate1020' suggest this file is part of the Emotet malware family, which commonly uses macro-enabled documents to download and execute further stages. The document body content is heavily obfuscated and unreadable, providing no direct clues to the lure.

Heuristics 7

ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
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` `02a7c690f255f801ffb6158001004b72bc87e4e321bdb1878af07b39dba6d71b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	23233 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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