Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 e85cd2b7d8fc66fe…

MALICIOUS

Office (OLE) / .DOCX

125.1 KB Created: 2020-09-30 20:57:00 Authoring application: Microsoft Office Word
MD5: 51196af047dce4cb5179f8054b04a68e SHA-1: 1ec8af916ddd39fc562f7ad2b5ef92f7b6e5f9b2 SHA-256: e85cd2b7d8fc66fe5e53999043e387a05bee8f1a8f0eb603fbf6d646707e0b49
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature Doc.Malware.Emotet-9769866-1. Static analysis revealed the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an auto-execution mechanism. This points to a common Emotet delivery technique where macros are used to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9769866-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769866-1
  • 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
7cb9b8e5dcd6093fc36997f1ddba9977c3343a23efe112843f21e09b69e64d3a
vba-macro oletools.olevba.extract_macros (decoded VBA source) 10245 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.