Emotet Office (OLE) / .DOCX malware analysis — malicious · e5b0d3a8fd2f8c08

MALICIOUS

Office (OLE) / .DOCX

205.5 KB Created: 2020-12-22 12:31:00 Authoring application: Microsoft Office Word

MD5: 552711ef12e024135c653f5e99afc4d1 SHA-1: 82715f7369e9fa080f205f91e922a585e80b35a1 SHA-256: e5b0d3a8fd2f8c0876aba637820cea0b01866dde8e089454066e1f6ece8e7669

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic T1059.001 PowerShell T1140 Deobfuscate/Decode Files or Information

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a common delivery mechanism for Emotet. The ClamAV detection explicitly names Emotet. The macro likely attempts to download and execute a second-stage payload. The document body, though heavily obfuscated, appears to be a lure to encourage macro execution.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-10024800-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-10024800-0
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` `b223e36ca03f3aef1de34ece9213428b8c399a8d27f7650232938837efe41a69`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16333 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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