Emotet Office (OLE) / .DOCX malware analysis — malicious · 5744548adb59f240

MALICIOUS

Office (OLE) / .DOCX

197.9 KB Created: 2020-09-21 22:06:00 Authoring application: Microsoft Office Word

MD5: 31ce01418bd41d9f9befbd96af60afce SHA-1: c7521cf695a5f1e15b49896e9718a2ef02a3e9d8 SHA-256: 5744548adb59f24037bb5500e559b80bc6917502f107b28a16b38ab4e6abfb71

280 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file contains VBA macros, specifically a Document_Open macro that is auto-executed. Heuristics indicate the use of CreateObject and GetObject calls, common for downloading and executing payloads. The ClamAV detection explicitly names this as Emotet. The presence of the 'macros.bas' artifact further supports the macro-based execution. The primary attack pattern involves luring the user to open a malicious document which then triggers the VBA code to download and execute a secondary payload.

Heuristics 8

ClamAV: Doc.Malware.Emotet-9765425-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9765425-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `3f69d910c7ab65b68002c6115856f94d0a2fe7883066824f7d890ec0735d30db`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19084 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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