Emotet Office (OLE) / .DOCX malware analysis — malicious · ef23dbf529879661

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 5d85ba3749bf3620d4ae795ee1fa9291 SHA-1: 4b83285a55eacd99c436876c891407357f98445f SHA-256: ef23dbf529879661934ae96bd110cd0bdaee122a767e1295772a153e435c53ee

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1140 Deobfuscate or Obfuscate

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' and the detection of VBA p-code auto-execution with execution tokens confirm the execution path. The document body content is obfuscated and does not provide clear user-facing text, but the technical indicators point to Emotet's typical behavior of downloading and executing secondary payloads.

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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