Malicious RTF — malware analysis report

Static analysis result for SHA-256 62b24cbb76ba7b4d…

MALICIOUS

RTF

36.3 KB First seen: 2023-06-22
MD5: 17540af6afcc7ae5ad69485e361fcf92 SHA-1: 83aa78e1626edc785f608bf3feb563be19a37d0f SHA-256: 62b24cbb76ba7b4d7df8d6f39b1521e8e8a6063789c4be19059d4f94dceb358e
160 Risk Score

Heuristics 5

  • Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITOR
    RTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings