Malicious RTF — malware analysis report

Static analysis result for SHA-256 ada9a55a7cab4df2…

MALICIOUS

RTF

154.1 KB
MD5: 78f99dc0b71605547f200e73646427e1 SHA-1: 999edf75610cf859dacefdc8878b7a4d029996aa SHA-256: ada9a55a7cab4df262e08add86b41d2e9d393ecaabd14a847b5c65630dd2cd10
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a critical heuristic for CVE-2017-11882, indicating exploitation of the Equation Editor font record overflow vulnerability. This vulnerability allows for arbitrary code execution.

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_off000023cf.bin
91ad0db020fbcf57d0bdb387f066f56e889870b41f4f0e6428f2a45be24a9fee		 rtf-objdata-decoded RTF \objdata at offset 0x23CF 28445 bytes

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