Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1381f92160b73b6c…

MALICIOUS

Office (OLE) / .DOCX

194.9 KB Created: 2020-09-22 04:18:00 Authoring application: Microsoft Office Word
MD5: 0ef9b52911ca0f0d62338da1853f3932 SHA-1: 3f1e7cb23d29134d19f0e429072b666f4d8c93f4 SHA-256: 1381f92160b73b6c0bb7968095746ad79ca485ed8190e82e45a020dbb51772f5
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, including a Document_Open macro, which is a common technique for Emotet. The heuristics indicate the use of CreateObject and GetObject, suggesting dynamic execution of code. The ClamAV signature also explicitly identifies this as Emotet. The VBA script appears to be heavily obfuscated but its structure and the presence of macro execution heuristics strongly suggest it is designed to download and execute a second-stage payload.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9764756-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9764756-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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.
  • 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
3b0af88f4dd9c23a17bbdbbca50e89a637a2364695c54b84b34b6c26baade961
vba-macro oletools.olevba.extract_macros (decoded VBA source) 19032 bytes