Emotet Office (OLE) / .DOCX malware analysis — malicious · 94d380a28caf7c11

MALICIOUS

Office (OLE) / .DOCX

162.7 KB Created: 2020-09-24 23:07:00 Authoring application: Microsoft Office Word

MD5: 90a7dd2112b123ebee92b4a0be5f1fad SHA-1: 8770f1a456f8ed26e744d97d86a0745f19ae396d SHA-256: 94d380a28caf7c118d2094401bf9c5185e70eb854cb6f7c01f6739d265ddcde8

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro named 'macros.bas' and the detection of VBA p-code auto-execution with execution tokens further support this. The document body, though heavily obfuscated, appears to contain encoded strings that likely form part of the PowerShell execution command. This combination suggests the VBA macro is designed to download and execute a second-stage payload, consistent with Emotet downloader behavior.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
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` `822ca2bb5afccdd585dd9d4b3c04999cc0b411b7c4b99b6e373f1239fc1c4ef1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	26832 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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