Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 0f674723c07c5218…

MALICIOUS

Office (OLE) / .DOCX

161.4 KB Created: 2020-09-24 23:07:00 Authoring application: Microsoft Office Word
MD5: 5173fd8406f95f3dea5d436b27ae2dcf SHA-1: 0cca10aabf80a2f1c367f148e57015a1b04bad93 SHA-256: 0f674723c07c5218324a68f25f78d92f4f7f8e4662c3856380643e948187a4ca
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9765780-0'. The VBA script appears to be heavily obfuscated but its intent is to download and execute a second-stage payload, likely via PowerShell, as indicated by the heuristic firings and the presence of obfuscated PowerShell-related strings in the document body.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
  • 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
822ca2bb5afccdd585dd9d4b3c04999cc0b411b7c4b99b6e373f1239fc1c4ef1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 26832 bytes