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

Static analysis result for SHA-256 60f6041600f6bf60…

MALICIOUS

Office (OLE) / .DOC

29.5 KB Created: 2021-06-14 12:38:00 Authoring application: Microsoft Office Word
MD5: 4d9bb8d649b0d5a1b5e5a383930a4ba8 SHA-1: 1c4f1114b74e30827358f2f83b6791f1119c4955 SHA-256: 60f6041600f6bf60c479145982b5690541d42fda8b8dc130cb1981a419b41879
182 Risk Score

Malware Insights

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

The sample contains a VBA macro that executes upon opening the document. This macro uses CreateObject to instantiate a WScript.Shell object and then runs a command to download a file from 'http://31.210.20.45/527/4243pp14.ex' to 'C:\Users\Public\Documents\followthere.exe' and subsequently executes it. 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a4a02165bdac2bd0dc37043a39b22e94851a05a184d8f2728f8ee445af459074		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 853 bytes

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