Emotet Office (OLE) / .DOCX malware analysis — malicious · 79b5c8e193b8d499

MALICIOUS

Office (OLE) / .DOCX

133.5 KB Created: 2020-09-28 07:04:00 Authoring application: Microsoft Office Word

MD5: f0f375080b9db4a2da2534a3727afc0f SHA-1: 987e1d5543de4a2c0cd56295b90a20213d346d11 SHA-256: 79b5c8e193b8d499df9ead35f2fd2ace9666dfd79aba57b144357a7b577da9b8

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9768657-0', strongly indicating the Emotet family. Heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject', a common technique for Emotet to download and execute further payloads. The document body content is obfuscated and does not provide clear user-facing text, but the presence of the auto-executing macro is the primary indicator of malicious intent.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9768657-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9768657-0
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` `e75df2f1d58eb5949c0678a2356db3178c4d0bfd05af2a59d3cebacf3557baf1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6244 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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