Emotet Office (OLE) / .DOCX malware analysis — malicious · 1c75a36df0381c3c

MALICIOUS

Office (OLE) / .DOCX

202.3 KB Created: 2020-12-21 13:51:00 Authoring application: Microsoft Office Word

MD5: bdf7c0c3378480a5f333a8b267324134 SHA-1: 18f38b5f0c2a56c3d19164bc3a47523e2094be6a SHA-256: 1c75a36df0381c3c31bb2df5ffcb9de6c86de4ff0c035d9c977c06c7734729f6

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic for Applications T1059.001 PowerShell T1140 Deobfuscate/Decode Files or Information T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically an auto-executing 'Document_Open' macro that uses 'CreateObject', strongly indicate a malicious downloader. The presence of VBA macros and the specific detection name 'Doc.Downloader.Emotet-10024800-0' point to the Emotet family. The obfuscated document body text, while unreadable, likely serves as a lure to enable macros, which then execute the malicious VBA code to download a second-stage payload.

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` `2b9ea9508201ca52b68627b510c681a978bf300b4bdc4157831522ad5544bdf3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10348 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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