Malicious RTF — malware analysis report

Static analysis result for SHA-256 e57dbea8fb56daa3…

MALICIOUS

RTF

85.9 KB
MD5: 9dff5aa5e35a065b94ceafe35de4056f SHA-1: ba5a097c3164bec5e188458d3e3008b584256691 SHA-256: e57dbea8fb56daa357b5290ea5374103ff2449193ea4d4d5bbaae2d3ec744ba0
100 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 Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit attempt. No document body or scripts were extracted, but the critical heuristic firing strongly suggests exploitation for client 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_off00002381.bin
14a9bade87be7358935f536a4c89caf618e789a475d1f4b13a5ceb51a5ba50fd		 rtf-objdata-decoded RTF \objdata at offset 0x2381 3631 bytes

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