Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 a173e1368bd84bab…

MALICIOUS

Office (OLE) / .DOC

159.9 KB Created: 2021-01-13 13:03:00 Authoring application: Microsoft Office Word
MD5: 12fda68c1061e26283ce696fe184f3a7 SHA-1: d63fd96d911eee173c8a7d61f0caec74dccf73fe SHA-256: a173e1368bd84bab43c9ee0bf4f6353acd9b1742ab20f3a3c8bd38ee1dd0c6be
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

The file contains a critical ClamAV detection for 'Doc.Downloader.EmotetRed02224-9938637-0', indicating it is a known Emotet downloader. High-severity heuristics confirm the presence of VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject' to execute code. This macro is designed to download and execute a second-stage payload, a common Emotet delivery technique. The document body content is heavily obfuscated and unreadable, providing no further clues.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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
e9fcb7b24b96c927108c24108deeb9bab3d0e216b4afe35ec73773de027c1d69		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10880 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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