Emotet Office (OLE) / .DOCX malware analysis — malicious · a3aa47fd0e69bb9a

MALICIOUS

Office (OLE) / .DOCX

144.1 KB Created: 2020-09-29 22:29:00 Authoring application: Microsoft Office Word

MD5: 1cda90f6c2d4db93950ade0625b18b91 SHA-1: 133d0c9a736067d3122d176ed40f2b96971ab605 SHA-256: a3aa47fd0e69bb9abfdf3263e13b7d854f23cc07579e8e294a8930e6498d6143

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including auto-execution via Document_Open and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro, specifically detected as Emotet, suggests the document is a delivery mechanism for this malware family. The macro likely executes a second-stage payload, as indicated by the auto-execution and CreateObject firings.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9769425-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9769425-0
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` `236c4e22a64ac61d77ecd3058e389c25a424fb288d33e5ff92abfd3f1b24ea8c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10347 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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