Emotet Office (OLE) / .DOCX malware analysis — malicious · aa637b00fdde01bd

MALICIOUS

Office (OLE) / .DOCX

166.0 KB Created: 2021-01-05 17:50:00 Authoring application: Microsoft Office Word

MD5: 42e107dba5f00b71698d3b87fc15e466 SHA-1: 26cac2eac89421727fe425242c630114fccb6bd0 SHA-256: aa637b00fdde01bdd5c1e2f3d0b91364528bee85d5f1a8c1ff80fa730cf79a8e

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names this as 'Doc.Downloader.EmotetRed02224-9938637-0', suggesting it's a downloader. The presence of a Document_Open macro that uses CreateObject indicates the script likely attempts to download and execute a second-stage payload. The obfuscated document body content does not provide further clues about the lure, but the technical indicators are sufficient.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `4ad47f06387c2fe26b40af7c5c3febabd490580f16728c81acf291150b2fb0bb`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10757 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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