Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 aaf638c3b449f405…

MALICIOUS

Office (OLE) / .DOC

252.2 KB Created: 2020-09-17 19:06:00 Authoring application: Microsoft Office Word
MD5: b88e1056240dea80dd78b57844f3ef9a SHA-1: 9868d8c16fa0b10282bc2fab31fffe8b5d71c423 SHA-256: aaf638c3b449f405cf5f255bed50fc0465623dbe6afff56e70598e3c6dbe3a5c
240 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an auto-execution attempt. ClamAV identifies this as 'Doc.Downloader.EmotetRed02226-9938639-0', strongly suggesting Emotet. The macro likely downloads and executes a second-stage payload. The presence of 'macros.bas' and the ClamAV detection are key indicators.

Heuristics 7

  • ClamAV: Doc.Downloader.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
  • 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
f3e5512d27b8b9bc41f3042e7c20b3a4762b4069585ccb21c6a950e8fd05377a		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21986 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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