Emotet Office (OLE) / .DOCX malware analysis — malicious · fc99030b27541774

MALICIOUS

Office (OLE) / .DOCX

163.1 KB Created: 2020-10-01 15:57:00 Authoring application: Microsoft Office Word

MD5: dc6d01d9d6138952ed55cf91f3481774 SHA-1: c44419402a15b1eadf83342b0bef6390356e1021 SHA-256: fc99030b27541774e2d607c0c72c6842c3b63c0012e8c883f7ca7898b6047bdd

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 VBA macros, specifically the presence of a Document_Open macro and CreateObject calls, strongly indicate malicious intent. The VBA macros are obfuscated and designed to auto-execute, a common tactic for Emotet to download and execute additional stages. The document body's content is heavily obfuscated and unreadable, further supporting the idea that the primary function is macro execution rather than user-facing content.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9770197-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9770197-0
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` `34626713db5720b3147c8823fb8dfd0fe34a12fce4df5a0aa65f24e3eab9d078`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10368 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 53 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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