Emotet Office (OLE) / .DOCX malware analysis — malicious · 9d7a1896ce306422

MALICIOUS

Office (OLE) / .DOCX

229.9 KB Created: 2020-08-14 13:39:00 Authoring application: Microsoft Office Word

MD5: a62e851945ed8402fd737bc3ca3ec5d1 SHA-1: 55d3725eeee2a9f723c0a921f24fe7fb9145438f SHA-256: 9d7a1896ce306422031490c093a129a199cf9c6d942ebc54853bd85386454a9d

300 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The sample contains a VBA Document_Open macro that utilizes a hidden UserForm command stager, a known technique for Emotet. This macro is designed to execute a second-stage payload. The ClamAV detection name 'Doc.Downloader.Emotet-9321492-0' further supports the Emotet family attribution. No specific URLs or executable payloads were directly extracted, but the presence of the stager and the ClamAV signature strongly indicate malicious downloader activity.

Heuristics 8

VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER

VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
ClamAV: Doc.Downloader.Emotet-9321492-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9321492-0
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` `865c37ae518b467a18f7f7cfd8ac4fb8e2c74b2d36657a71cf7fdd09ff330211`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	8121 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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