Emotet Office (OLE) / .DOC malware analysis — malicious · a2205fbf4c2dc7af

MALICIOUS

Office (OLE) / .DOC

146.4 KB Created: 2020-10-16 06:52:00 Authoring application: Microsoft Office Word

MD5: 4b95db142bef5f304db3f3223ef71e1f SHA-1: 8a0a52c0dfb531c89a84d3dda31f63d8b1454dbc SHA-256: a2205fbf4c2dc7aff7ddd1dd28bd8b2cb9b1f892d07347e8cbe007343a9b3d15

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature 'Doc.Trojan.Emotet-9778443-1', strongly suggesting the Emotet family. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject. This points to the macro's intent to download and execute a second-stage payload. The document body content is heavily obfuscated and does not provide clear user-facing text, but the technical indicators are sufficient for attribution.

Heuristics 7

ClamAV: Doc.Trojan.Emotet-9778443-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Emotet-9778443-1
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` `54ccb2978dc791799651cc6c51a326cfd57296c98b87fa2adc3d5b7f8b3276d7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15442 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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