Emotet Office (OLE) / .DOCX malware analysis — malicious · 2ad8e5f6ebed1e18

MALICIOUS

Office (OLE) / .DOCX

232.6 KB Created: 2020-08-27 19:13:00 Authoring application: Microsoft Office Word

MD5: 2db8c3eb1bf86495d5d50c49b10f1e50 SHA-1: 7d49e75574499f2e253d70a57eb8e4d698a7d116 SHA-256: 2ad8e5f6ebed1e180bebd0a6c71854ab201762156227d8c750cee144140107af

300 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 macro that utilizes CreateObject and a hidden UserForm to execute a command stager. This is a common technique for Emotet to download and execute further malicious payloads. The ClamAV detection also strongly suggests Emotet. No external URLs or specific commands were directly extracted from the available evidence, but the overall pattern is highly indicative of Emotet's downloader functionality.

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.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
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` `c8fa06fc63ee0918409e122c2c3190357ad554fe9675a98aa08416d8a7efb709`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10175 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 23 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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