Emotet Office (OLE) / .DOCX malware analysis — malicious · bf3d2dcd36ac834a

MALICIOUS

Office (OLE) / .DOCX

141.9 KB Created: 2020-09-29 09:08:00 Authoring application: Microsoft Office Word

MD5: 3ce6662c0b6f09a2293db83078a79d10 SHA-1: eb8ae1fd1304eaadb2e7288352fe3b47eee29cef SHA-256: bf3d2dcd36ac834a2eed602f48d297d5cf4d5bc86cbcc62a7eb4929dd8fcda9d

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9769137-0', strongly suggesting the Emotet family. Heuristics indicate the presence of VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject', a common technique for downloading and executing additional payloads. The presence of a 'macros.bas' file further supports this. The document body content is heavily obfuscated and does not provide clear user-facing text, but the macro behavior is indicative of a downloader.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9769137-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9769137-0
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` `2f5b3223d32b6b79c027453efef3c5410c27df5205b9cb2b32dd9a1e0304e007`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8132 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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