Malicious Office (OLE) / .DOCX — malware analysis report

Static analysis result for SHA-256 12dd700209b14c80…

MALICIOUS

Office (OLE) / .DOCX

163.1 KB Created: 2020-10-16 14:09:00 Authoring application: Microsoft Office Word
MD5: a0f86eb8bc8e5d5c5e83591c9af7b985 SHA-1: 9eb2df6db7cb1ee4739e3fbc0744968d6bb14309 SHA-256: 12dd700209b14c8070f18c7d204bf4cd9232b3a98ddee71e9618c28ca67f6520
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious Office document containing a VBA macro that is automatically executed via the Document_Open subroutine. The macro utilizes CreateObject, a common technique for launching malicious payloads. ClamAV detection confirms its malicious nature, identifying it as Emotet. The macro's obfuscated nature and use of CreateObject suggest it is designed to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9778566-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9778566-0
  • 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.
  • 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
29095f417e940309e4c3b74017a13ff70f85d23507d6b5296a03fa98c635a78b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 15315 bytes

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