Malicious RTF — malware analysis report

Static analysis result for SHA-256 d8eef7afa60eac34…

MALICIOUS

RTF

156.3 KB
MD5: 5825bfe6496637681381356a73d98dbc SHA-1: 8973d6f53eb7b3359025145b5b07e070e7e2182a SHA-256: d8eef7afa60eac34a0b509c31261b1afeb86942620879850584fe7584e92cce7
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 vulnerability. This vulnerability allows for arbitrary code execution upon opening the document. No further stages or IOCs were extracted from this sample.

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
4192eafc461e18c6fd5b880743a2c021304b9ff06ed13a0411f0c0b06042806f		 rtf-objdata-decoded RTF \objdata at offset 0x2381 28445 bytes

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