Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0f285c8cec726ec8…

MALICIOUS

Office (OLE) / .DOCX

154.8 KB Created: 2020-10-19 12:20:00 Authoring application: Microsoft Office Word
MD5: 04211a187b04649eaa656393f175cfc5 SHA-1: 5df586497be7baf793f9f5da8fc70db536a76e85 SHA-256: 0f285c8cec726ec8916046cfaf44c2d719e8cfa93755432761f93f101b81d10c
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 was detected as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9780400-0', indicating it is a known Emotet variant. The presence of a 'Document_Open' macro that uses 'CreateObject' strongly suggests the execution of obfuscated VBA code intended to download and execute a secondary payload. The obfuscated nature of the VBA script, with its complex loops and variable names, is characteristic of Emotet's techniques to evade static analysis.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780400-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780400-0
  • 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
1b934c7a6a945d183f556fc460816db0116e14a6233b4c84dca18770500f607e		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15515 bytes

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