Malicious RTF — malware analysis report

Static analysis result for SHA-256 9abbbdf7b35910c7…

MALICIOUS

RTF

86.1 KB
MD5: e27ef7a56b82e952849c366cd2138883 SHA-1: 41146a26f8fe9bb170557250f7107c4b10826d36 SHA-256: 9abbbdf7b35910c74a3f028bcfde4bd5767e88254c74f7923b03d4aa53cdf84d
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, related to a buffer overflow in the Equation Editor. This exploit is designed to achieve arbitrary code execution on the victim's machine.

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_off00002366.bin
f9f7a2203feb2ce9a0f45898c9470f96da3e4407fd4f9c676168a73de11a4c21		 rtf-objdata-decoded RTF \objdata at offset 0x2366 3631 bytes

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