Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 b2aecd3d2cf2dd6e…

MALICIOUS

Office (OLE)

131.5 KB Created: 2020-10-14 22:05:00 Authoring application: Microsoft Office Word
MD5: bdc6b1b04d81bf8f5c4c053610a15ce3 SHA-1: 24044ca622d52dbb8ac1e0f7b18f7a8551bbb3f4 SHA-256: b2aecd3d2cf2dd6ea915ebe149bbf5901ce2b0918d2d1132c563e3b5db3deaab
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The file is identified as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9777973-1', strongly indicating the Emotet family. Static analysis reveals the presence of VBA macros, specifically a Document_Open macro that utilizes CreateObject, a common technique for executing arbitrary code. This macro is likely responsible for downloading and executing a second-stage payload, a hallmark of Emotet's infection chain. The document body appears to be obfuscated or malformed, providing no direct user-facing lure.

Heuristics 7

  • ClamAV: Doc.Malware.Emotet-9777973-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9777973-1
  • 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.
  • 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
9296410b78ac92b55714bdfa954afbb0bd00efb2266f225f69af6657d47bd2de		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9460 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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