Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 bbcabd13e4206b6a…

MALICIOUS

Office (OLE) / .DOCX

175.8 KB Created: 2020-10-02 15:03:00 Authoring application: Microsoft Office Word
MD5: a0106710af6a1822010cd119f747ac6d SHA-1: 5c1e2fb84796f60fc6c127536f4e5c4a4e680661 SHA-256: bbcabd13e4206b6a8576e29717581b931040a859e33b4ee3c624d47f7d65ad24
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, including auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a Document_Open macro suggests the execution of obfuscated VBA code upon opening the document, which is characteristic of Emotet's delivery mechanism. This macro likely downloads and executes a second-stage payload, aligning with the Ingress Tool Transfer (T1105) technique. The SHA256 hash is included as a primary IOC.

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
9c73b282cef1909acf6926cc6a46e0c4c3197855b1b22198afbc8de664dfe7ba		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10626 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 53 Chr/ChrW string-construction calls. Carved macro source contains an auto-exec entry point and execution/download terms.

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