Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 c371ff9b42817e10…

MALICIOUS

Office (OLE) / .DOCX

161.3 KB Created: 2020-09-24 23:07:00 Authoring application: Microsoft Office Word
MD5: 226cb746b610a4d9ae5693d65ac53963 SHA-1: 673bb2f232fea59d5a93de04548133025c035836 SHA-256: c371ff9b42817e104cecdece97a45a92dbc996cc6630dedb60387b6d2cf3eef7
240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.001 PowerShell T1059.005 Visual Basic T1204.002 Malicious File

The file contains VBA macros, specifically a Document_Open macro that utilizes CreateObject to execute code. The ClamAV detection explicitly identifies this as 'Doc.Downloader.Emotet-9765780-0', strongly suggesting the Emotet family. The document body, though heavily obfuscated, appears to be constructing a PowerShell command. This indicates the macro's intent is to download and execute a second-stage payload, a common Emotet delivery technique.

Heuristics 7

  • 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.
  • 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
822ca2bb5afccdd585dd9d4b3c04999cc0b411b7c4b99b6e373f1239fc1c4ef1
vba-macro oletools.olevba.extract_macros (decoded VBA source) 26832 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.