Emotet Office (OLE) / .DOCX malware analysis — malicious · a0befbd5126d4660

MALICIOUS

Office (OLE) / .DOCX

162.0 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word

MD5: b5a0a1fb36f8cc1c8920b4233b188e2f SHA-1: 862e74e6c45976e0fbedb3913fd2e9bf40b2b0d2 SHA-256: a0befbd5126d4660e42ef357002601c14c94c5e2b1f9c83097159362a590075d

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV heuristic identifies this file as Emotet, a known downloader. The presence of a Document_Open VBA macro, which is triggered automatically upon opening the document, strongly suggests malicious intent. This macro utilizes CreateObject, a common technique for executing arbitrary code, likely to download and execute a secondary payload. The heuristic OLE_VBA_PCODE_AUTOEXEC_EXEC further confirms auto-execution of VBA code.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
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` `aaf531f7a5bc5489efc2142934ae4807c7a8fc52a02b1483f9210c80918c01e7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16228 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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