Malicious RTF — malware analysis report

Static analysis result for SHA-256 e55f9ea7adba495f…

MALICIOUS

RTF

153.7 KB
MD5: 333be6cfe6ad144a7e7046711c74f3bf SHA-1: 2d17fbe24d4f0598a194a7ba3022593e63f4f3e2 SHA-256: e55f9ea7adba495ff95de732942366315c1305337082c78ecb322a2ae12eb33a
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 vulnerability, CVE-2017-11882, in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit attempt. No further stages or specific family indicators were identified.

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_off00002331.bin
d13fc119bd9b6db8840f3687804871a15e977604aff2f58f33400f0b84ba73c9		 rtf-objdata-decoded RTF \objdata at offset 0x2331 28445 bytes

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