Malicious RTF — malware analysis report

Static analysis result for SHA-256 4788ae7152ae135e…

MALICIOUS

RTF

85.7 KB
MD5: 780b6dc92e0c22535e312d1b7fdf35cc SHA-1: 9541a9add1cc7ffcd8111a86aa1a7479611f9120 SHA-256: 4788ae7152ae135e3dc4ad396c2bf19d0e7ee670b37dff220c7bbb51f16afe13
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit attempt.

Heuristics 4

  • CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882
    Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
  • Equation Editor CLSID critical RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002406.bin
6adfb856a60b475f9c8184a5cb4c8d57f0954166210f57ed5e92eddb4b7b07d7		 rtf-objdata-decoded RTF \objdata at offset 0x2406 3631 bytes

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