Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 b8ac3c9a1482fd7b…

MALICIOUS

Office (OLE) / .DOC

168.8 KB Created: 2021-01-05 06:14:00 Authoring application: Microsoft Office Word
MD5: 6e215641e3a9c52b318fc6d89a01d7af SHA-1: 6a72d77f40d6233c4e734c34df0ebabc196a68c6 SHA-256: b8ac3c9a1482fd7bb93c3e599715e564f88709bab4f514344ac740f4bbdcbff9
242 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample contains a malicious VBA macro that executes upon opening the document. The macro utilizes CreateObject to instantiate a FileSystemObject, which is then used to create two files: 'gMEpHB:\SKWvYCA\YtZqA.fQoAE' and 'ehLoAm:\PAVZiAGU\jVPHv.fAgoFBYmC'. This behavior is indicative of a downloader or dropper stage, likely preparing the system for further malicious activity. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests the Emotet family.

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
e6cbaf609dbac192156d45839b7ee0912b890e835217bd9fcd38a1509f7c92fb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10713 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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