Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 90828b96547b3564…

MALICIOUS

Office (OLE) / .DOC

188.5 KB Created: 2020-10-21 06:35:00 Authoring application: Microsoft Office Word
MD5: 8715ec33d3b4bbbba583bfd7d7abd26e SHA-1: 815d7918e532884405b9dba574880be83c6f3b8c SHA-256: 90828b96547b35641ebd76b91c0200f8f057974be00f528002acf24663c9991f
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. This macro utilizes CreateObject to initiate the download and execution of a secondary payload, as indicated by the ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0'. The presence of VBA auto-execution and CreateObject calls strongly suggests a dropper functionality, characteristic of the Emotet family.

Heuristics 7

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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.

FilenameKindSourceSize
macros.bas
f96fcb8cc4916d97c835c4422355f14f0c9757157ab8f3fd4f7e89ea3c4a99e6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20702 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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