Emotet Office (OLE) / .DOCX malware analysis — malicious · d92a06690d830abe

MALICIOUS

Office (OLE) / .DOCX

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

MD5: ac0bbc4b6b5ccde2c0723052683c9870 SHA-1: 14e1c3561a56096479b280e38be83f5cf1e381e1 SHA-256: d92a06690d830abe94e1a9805979b5174998266231cfa82a881bdd5e39b32ed7

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The sample contains a VBA macro that automatically executes upon opening the document, indicated by the OLE_VBA_DOCOPEN and OLE_VBA_PCODE_AUTOEXEC_EXEC heuristics. The ClamAV detection and heuristic firings strongly suggest this is an Emotet downloader variant. The obfuscated VBA code, likely within the macros.bas artifact, is designed to download and execute a secondary payload. The presence of 'powershell' and 'encode' strings in the document body further supports the execution of malicious code.

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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