Emotet Office (OLE) malware analysis — malicious · 3a008e06592f52dd

MALICIOUS

Office (OLE)

163.8 KB Created: 2020-09-15 19:31:00 Authoring application: Microsoft Office Word

MD5: 1470ddaf8b8d58eb0f5ed455198fa5d6 SHA-1: 3bde18a2fe6e20f082b28959da3f986acb85dd64 SHA-256: 3a008e06592f52dd80d9010935d5c1600be581e27402f7b909fb7d66aca492cb

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-9761754-0', strongly indicating the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject' for execution. This suggests the macro is designed to download and execute a second-stage payload. The presence of 'macros.bas' further supports this. The document body content is heavily obfuscated and unreadable, providing no direct clues to the lure, but the technical indicators are sufficient for attribution.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9761754-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9761754-0
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` `75714e73d3e8750b3760209a7997fccc8b6d96f31b59fa1d20ad2b0ef4583864`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25430 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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