Emotet Office (OLE) / .DOCX malware analysis — malicious · b7f75b414b39d995

MALICIOUS

Office (OLE) / .DOCX

154.8 KB Created: 2020-10-16 13:32:00 Authoring application: Microsoft Office Word

MD5: 544e7f3487b28e3df91c54b83b78fa6e SHA-1: 86f89be3393661499e7b86be94e13fd6c8529ec7 SHA-256: b7f75b414b39d9953e79e861636a8f2752e14212713048f10fe98ed9a5a28063

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names this as Emotet. The presence of the 'macros.bas' artifact further supports the macro execution. The macro's likely purpose is to download and execute a secondary payload, consistent with Emotet's typical behavior.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9778560-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9778560-0
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` `80b8cf2680dee027d2b0bedfb311ad72d589d776013195663ff998d7cc50edcd`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15454 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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