EmotetiBlueUpdate1020 — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 1865098fcd518717…

MALICIOUS

Office (OLE) / .DOCX

189.5 KB Created: 2020-10-21 08:44:00 Authoring application: Microsoft Office Word
MD5: 2084e6ef5937c4029b6ab769971c6233 SHA-1: 63e5354af33903d24e448e6faab07a9e02cd07af SHA-256: 1865098fcd518717e48cae856ca1cb02c85a12a37eac4934fe3ec1a7ac2040ac
202 Risk Score

Malware Insights

EmotetiBlueUpdate1020 · confidence 95%

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

The sample is a DOCX file containing VBA macros, including a Document_Open auto-execution macro. Heuristics indicate the use of CreateObject, suggesting the macro is designed to download and execute a secondary payload. The ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020' strongly suggests the family and its dropper functionality.

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
1495f7c7ced0d5d67a50de030db1d404fcece38568f93b06e33d3100a17ee340
vba-macro oletools.olevba.extract_macros (decoded VBA source) 20761 bytes