Emotet Office (OLE) / .DOC malware analysis — malicious · 2caff98c8b43be20

MALICIOUS

Office (OLE) / .DOC

162.9 KB Created: 2020-09-18 04:35:00 Authoring application: Microsoft Office Word

MD5: 5f73a7ea27d20cfec9aa15956b3e4a29 SHA-1: c7b3c7ddba669c774b527770db0665556f69f5aa SHA-256: 2caff98c8b43be20b11fca6020c964fc799a6a67943b917ef7ed557c458a78ed

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9763318-0', strongly suggesting the Emotet family. Static analysis reveals the presence of a large VBA macro, specifically triggered by the 'Document_Open' auto-execution function. This macro utilizes 'CreateObject', a common technique for initiating malicious actions, such as downloading and executing further stages. The presence of the 'macros.bas' file and the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic further confirm the macro-based execution.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9763318-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9763318-0
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` `b0a943f27b229afc0d61565177642c9be098ce97924ee703fbff1ec25a707666`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	21996 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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