Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 6fc658810e553c73…

MALICIOUS

Office (OLE) / .DOCX

221.9 KB Created: 2020-09-18 06:55:00 Authoring application: Microsoft Office Word
MD5: b40b74bf5ae7301a4c1af41f40786c5b SHA-1: c162e47b34c113fa4ba0bf2f8f4c138c0544c300 SHA-256: 6fc658810e553c73a9fbe5167def20b6919c2d71bd7b6e538cbc58bd147e6771
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample was detected as malicious by ClamAV with the signature 'Doc.Dropper.EmotetWinMob0920-9636503-0', indicating it is likely an Emotet variant. High-severity heuristics confirm the presence of VBA macros, including a Document_Open auto-execution macro and CreateObject calls, which are commonly used to download and execute secondary payloads. The VBA script's obfuscated nature and use of string concatenation suggest it is attempting to hide its malicious intent, likely to download and execute a second-stage payload.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetWinMob0920-9636503-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetWinMob0920-9636503-0
  • 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
88c8a6d475859011dad3993e76e09a2a592ce706e1bde139ef1cfc941be7102d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20707 bytes

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