Malicious RTF — malware analysis report

Static analysis result for SHA-256 9bc6baf9508f9bc4…

MALICIOUS

RTF

86.6 KB
MD5: 328295a1ac6b7cc7ec8ead49e1d20bdc SHA-1: 967d3d1eaa0a248adac5894df8edf023fb8cae25 SHA-256: 9bc6baf9508f9bc4628bbd0b02bafa8633866bbcfc2ec331119d0044e3536235
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing for CVE-2017-11882 indicates the RTF document is designed to exploit a known vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, which is the primary mechanism for delivering a malicious payload. No further details on the payload or its origin are available from the static analysis.

Heuristics 3

  • 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.
  • 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_off0000234d.bin
30401e18449c461ba3fd8d085715a54688d51a6f883f938dd29a05b7c60c80b7		 rtf-objdata-decoded RTF \objdata at offset 0x234D 15974 bytes

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