Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 ea1077f521c8bc62…

MALICIOUS

Office (OLE)

155.5 KB Created: 2020-09-14 22:30:00 Authoring application: Microsoft Office Word
MD5: f2253f7ced3b33c6a567a1b33c2ed3f0 SHA-1: acf263f3c2ee3c09e999215efa876889ef21e947 SHA-256: ea1077f521c8bc62e67fb3ae2ec2098efe5d623d79ee85b3f7e74bb226d9668e
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.Malware.Emotet-9762395-0', strongly suggesting the Emotet family. Static analysis detected VBA macros, specifically a Document_Open macro that uses CreateObject, indicating an attempt to execute code upon opening. This pattern is typical for Emotet's initial infection vector, which often involves downloading and executing further stages of malware.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9762395-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9762395-0
  • 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
52e73c091f55432254cc001aa79ef5320e8222785e35361d8b9c34d1d7c1b011		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18535 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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