Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 070f607b4f349149…

MALICIOUS

Office (OLE) / .DOCX

146.9 KB Created: 2020-09-30 13:54:00 Authoring application: Microsoft Office Word
MD5: 567889e7abd0759fe904993de9ec1b59 SHA-1: 1a9ee86c114bbcc1dd84b73000fe57646ee3730d SHA-256: 070f607b4f349149ac149bbafca3314d4fdc3db65a0a3fc158b564f77d9ee460
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains a VBA macro that executes upon opening the document, as indicated by the 'Document_Open' macro and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The macro utilizes 'CreateObject' to likely download and execute a second-stage payload. ClamAV detection further confirms its malicious nature, identifying it as Emotet. The presence of VBA macros and the execution of code via 'CreateObject' strongly suggest this is a macro-based downloader.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9769801-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769801-1
  • 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.
  • 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
b0a96d5f70fa37f74dd6926b04c01f24a02f2a82bef41b3183b9207cf3a20fca		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10253 bytes

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