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

Static analysis result for SHA-256 5d13ffd77a7df026…

MALICIOUS

Office (OLE) / .DOC

416.5 KB Created: 2021-06-10 08:45:00 Authoring application: Microsoft Office Word
MD5: 263da37e9cc277438afdc007f85534e0 SHA-1: 7f756e2bd481114bc1d4ea15cb3b7323308fc107 SHA-256: 5d13ffd77a7df02676e6a1942454299684ca2a50f6e419a9e6c7564b65a7f48e
182 Risk Score

Malware Insights

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

The sample contains a VBA macro that executes upon opening the document. This macro utilizes `CreateObject("wscript.shell")` to download and execute a file from the URL `http://31.210.20.45/1xBet/290-App19.ex`, saving it as `C:\Users\Public\Documents\byopen.ex`. This indicates a downloader or droppper functionality.

Heuristics 6

  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • 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://31.210.20.45/1xBet/290-App19.ex
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
984b54204b7148c763dbc9e24023ba6db873fc1ebb937c0c5b448988e1126a37		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 820 bytes

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