Emotet Office (OLE) / .DOCX malware analysis — malicious · fe7a953a524746ec

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 78bd7c58171935e70e72d50f4de30eaf SHA-1: cc2d44cba3c0f61406483ef5f9d2bc22d6716252 SHA-256: fe7a953a524746ec38ded3f4aa02efd66cb67e9223f9e01150cdbb36101696d8

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate a malicious Office document. The presence of VBA macros, specifically an auto-executing Document_Open macro that uses CreateObject, is characteristic of Emotet's delivery mechanism. The document body, though heavily obfuscated, appears to be part of the macro's execution flow. The primary intent of the VBA macro is to execute arbitrary code, likely downloading and running a second-stage payload, which aligns with Emotet's typical behavior.

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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