Emotet Office (OLE) / .DOCX malware analysis — malicious · 520ca27ad3a13618

MALICIOUS

Office (OLE) / .DOCX

225.0 KB Created: 2020-10-28 06:28:00 Authoring application: Microsoft Office Word

MD5: bbda5f0571a8cf14ab32ea159eddc7d2 SHA-1: 4006db99c820cdaf8417b1fbaf5b0b68d4b46fdf SHA-256: 520ca27ad3a13618d306b397f83a91daf238997358520459895991c6285328e5

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV heuristic identifies this file as Emotet. The presence of a Document_Open VBA macro, combined with CreateObject calls and p-code execution, strongly indicates that the macro is designed to run automatically when the document is opened. This macro likely downloads and executes a secondary payload, a common Emotet delivery technique. The embedded URL was confirmed benign and no other IOCs were extracted.

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` `7f3b9de1e0285548916c28f6601d8d02c3123bdd009e8218f5871d9b0b89faf5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16327 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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