Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 167054c6f6ef4e6f…

MALICIOUS

Office (OLE) / .DOCX

199.5 KB Created: 2020-10-21 21:54:00 Authoring application: Microsoft Office Word
MD5: 0a5a4b81a02e363de2a54de632ac9e7b SHA-1: 3ec72f78893fb78986d1159986fe3bfb76924fd7 SHA-256: 167054c6f6ef4e6f6ec2dce63809ab09b3a1f42218769f931cf0c07ebdb42fc4
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains a high number of critical and high severity heuristics related to VBA macros, including the presence of a Document_Open auto-execution macro and CreateObject calls. ClamAV detection explicitly names this as an Emotet variant. The VBA script is heavily obfuscated but its structure and the heuristics suggest it is designed to download and execute a secondary payload, a common Emotet tactic.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
6c391991df0deaab71158b56a42728fa6cc0fa0f9cdacd00457125ab6d1e3e9d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 23148 bytes

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