Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 c5ffe3ce0ba5a92b…

MALICIOUS

Office (OLE)

135.1 KB Created: 2020-10-15 07:11:00 Authoring application: Microsoft Office Word
MD5: b15be0980ec39ab60292d11a426ebd0c SHA-1: 1c6831c60557846f7932551d5bdbd7e0ec81ec5a SHA-256: c5ffe3ce0ba5a92b90adffbca1dc9c15e1872bd60ec9094aba374a1f426c8652
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 file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Emotet-9778182-0'. High-severity heuristics indicate the presence of VBA macros, specifically a 'Document_Open' macro that uses 'CreateObject' for execution. This strongly suggests the macro is designed to download and execute a second-stage payload, a common Emotet tactic. The document body content is heavily obfuscated and does not provide further context.

Heuristics 7

  • ClamAV: Doc.Downloader.Emotet-9778182-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778182-0
  • 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
05186e239e76e1c73e5319ce1be1478c63b01a327801cd1193ca1ac174bd447f		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 11222 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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