Emotet Office (OLE) / .DOCX malware analysis — malicious · c0b7364bc8b2a4ef

MALICIOUS

Office (OLE) / .DOCX

192.5 KB Created: 2020-10-27 20:26:00 Authoring application: Microsoft Office Word

MD5: effc04eb9a457fff75b32709f17e3612 SHA-1: 1a2024e5c55d83a1f6db178f2903a93059647c9c SHA-256: c0b7364bc8b2a4ef21f805fa2085e3ad41e5ea6206b0274d6300d64305d4ec0f

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

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 in macros.bas, combined with the auto-execution heuristic, suggests the macro is designed to run automatically when the document is opened. This macro likely downloads and executes a second-stage payload, a common Emotet behavior. The document body text appears to be heavily obfuscated or corrupted, but the technical indicators are clear.

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` `557610d73c449d90b5a2aabccaaf95f7a5897df031246bc03a17cf1b86e2503b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16372 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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