Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 85226bf4b5aae875…

MALICIOUS

Office (OLE) / .DOC

124.7 KB Created: 2020-09-30 20:57:00 Authoring application: Microsoft Office Word
MD5: 3f0687b3da49921fc02086e83acc1367 SHA-1: 2dadbe40f84b829d741ec24bc32757a1a6e0677a SHA-256: 85226bf4b5aae875eb53ec867bf5e5349c57c45cca5e2077e05eb090328c4d61
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a strong indicator of malicious intent. ClamAV detection and the presence of obfuscated VBA code suggest this is likely an Emotet variant, a known banking trojan and downloader. The VBA script appears to construct a string, likely a URL or command, which is then used to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9769866-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769866-1
  • 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
7cb9b8e5dcd6093fc36997f1ddba9977c3343a23efe112843f21e09b69e64d3a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10245 bytes

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