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

Static analysis result for SHA-256 71d9875c0b0f5eb7…

MALICIOUS

Office (OLE) / .DOCX

210.3 KB Created: 2020-10-30 18:34:00 Authoring application: Microsoft Office Word
MD5: 49256c3f8060cbd3536e25428c41072f SHA-1: 26d3172d12253de9892a1a0bcfe3ba8699e4e2bf SHA-256: 71d9875c0b0f5eb7e21f54a29ec6f15a2a260d95d927ef9b0241a8ebe7224296
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon document opening. The macro utilizes CreateObject to execute code, strongly suggesting it's designed to download and run a secondary payload. The ClamAV detection name 'Doc.Downloader.EmotetRed02224-9938637-0' further supports this downloader functionality.

Heuristics 6

  • 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.
  • 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
035247075e717030c87eb1e7a35ad2ad2c8145cc7110257c5be024c0ffb99fb6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 17340 bytes

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