Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 2d09a2c2cc27e1e5…

MALICIOUS

Office (OLE) / .DOCX

132.5 KB Created: 2020-09-30 05:26:00 Authoring application: Microsoft Office Word
MD5: 7b27329237d1a06948530b965d1339fa SHA-1: 50a5514364b4216f67300b2ce6e6e5455041c652 SHA-256: 2d09a2c2cc27e1e5e697d5c7fd6e7cbba00b82f6e118d417147a336d7c4fe92a
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9769541-0'. Static analysis reveals the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject' and p-code auto-execution, indicating an attempt to run malicious code. This strongly suggests the document is a downloader for Emotet, designed to execute further stages of the attack.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9769541-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9769541-0
  • 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
b2b495189d2eb2b89dce9719098105d933c1125fa9413aec5a7ff49e851b8844		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10579 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 28 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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