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

Static analysis result for SHA-256 94e9965cc66ca20e…

MALICIOUS

Office (OLE) / .DOC

92.5 KB Created: 2015-11-27 08:26:00 Authoring application: Microsoft Office Word First seen: 2022-11-25
MD5: b7bb1381da652290534605e5254361bd SHA-1: 2047787498e75f90141cf3b243e3f1ad52501089 SHA-256: 94e9965cc66ca20e1ae3ed4f1c74159be6552ee9045b26f2c89ad5e5fa10626f
422 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer T1059.003 Windows Command Shell

The VBA macros contain references to URLDownloadToFile and WScript.Shell, indicating an intent to download and execute a payload. The AutoOpen macro is present, suggesting automatic execution upon opening the document. The presence of `Declare PtrSafe Function CadenaParametro Lib "urlmon" Alias "URLDownloadToFileA"` strongly suggests the macro attempts to download a file from a URL.

Heuristics 10

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
  • URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD
    URLDownloadToFile in VBA
  • Reference to Windows Script Host high SC_STR_WSCRIPT
    Reference to Windows Script Host
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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
ac7d109130f130ad31fdaa351c9651543ef1956b1013a9f34e9addb0b6e2bebc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 118715 bytes

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