Malicious RTF — malware analysis report

Static analysis result for SHA-256 ead867139e8cca59…

MALICIOUS

RTF

69.8 KB
MD5: 46407000bd1153b0c0b08bb3e3152fd0 SHA-1: ee3ea4359d58b1011b77dbfbf6b48df6c65cbc93 SHA-256: ead867139e8cca595fff6e3a7ef5962483055410afa7792e46c4b8c2f0f064c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in the Equation Editor. This vulnerability allows for arbitrary code execution, indicating the file is designed to exploit this specific flaw to compromise the system.

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_off0000010a.bin
f00999d95d43bb920063a25775c030be59c2251a1d8a5a343c380e2551dec397		 rtf-objdata-decoded RTF \objdata at offset 0x10A 3631 bytes

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