Emotet Office (OLE) / .DOCX malware analysis — malicious · ab0044f2f254b492

MALICIOUS

Office (OLE) / .DOCX

174.5 KB Created: 2020-07-31 10:47:00 Authoring application: Microsoft Office Word

MD5: 1307aef9d3541d47a9d2e483a3a0ed8c SHA-1: 97030a06fa760a67b316e4f34aa98ff7ab4bea86 SHA-256: ab0044f2f254b4928a9ce9ae9a0d1cb2217f5f4b23c1d6378286dcf834db631a

300 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The file contains VBA macros, specifically a Document_Open macro that utilizes a hidden UserForm to execute commands. This technique is characteristic of Emotet, which often uses such methods to download and execute further stages. The ClamAV detection name 'Doc.Malware.Emotet-9246062-1' strongly supports this family attribution. The embedded URL was confirmed as benign, but the primary malicious activity stems from the VBA macro execution.

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.Malware.Emotet-9246062-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9246062-1
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` `1c243ec7b5af832654e3d15a8bab6cc0f543e32f0f8dc1b32249f49f660b54b4`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5001 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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