Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 a2649cc70c58fc84…

MALICIOUS

Office (OLE) / .DOCX

176.4 KB Created: 2020-10-16 10:38:00 Authoring application: Microsoft Office Word
MD5: b6aa419c0994b95a9879e163777d0ab2 SHA-1: 8bc98a5e70a8c400fdbd4ba4654ce5100d2a919a SHA-256: a2649cc70c58fc84111b5f64209f10b4e80e641f4c1feed876e7e417f9f1f8f1
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is identified as malicious by ClamAV with the signature Doc.Trojan.Emotet-9778443-1. Static analysis revealed the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject. This indicates the macro is designed to execute arbitrary code upon opening the document, a common characteristic of Emotet. The obfuscated document body content does not provide further insight into the specific lure, but the macro execution is the primary indicator of malicious intent.

Heuristics 7

  • ClamAV: Doc.Trojan.Emotet-9778443-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Emotet-9778443-1
  • 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
dae34bf6e418fa0d8b9b1311becc27775cd875aa2c1a1dc0c8de66f7f57fbc42
vba-macro oletools.olevba.extract_macros (decoded VBA source) 15342 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.