Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 094e2a3d577107bb…

MALICIOUS

Office (OLE) / .DOCX

151.2 KB Created: 2020-09-22 07:23:00 Authoring application: Microsoft Office Word
MD5: 415c132426b8f97f79091641288744f6 SHA-1: 633528b1f7f1fe6b5c4505c1121babf0d95b355b SHA-256: 094e2a3d577107bbcbee3a5a181971bc5aeac18624bfdf436f85d2d47b1ef697
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 auto-execution macro, which is a common technique for Emotet. The macro uses CreateObject and GetObject calls, indicative of payload execution. ClamAV also specifically identifies the file as Emotet. The macro's obfuscated nature and reliance on string concatenation within the 'Fyvyatkk95p3jg_' variable suggests it is designed to download and execute a secondary stage.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9765070-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765070-0
  • 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
37ce3f491be0f3d0a753fc5c7339c798cd89a6843cff6094a48ab180ad94ccb1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16563 bytes

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