Malicious RTF — malware analysis report

Static analysis result for SHA-256 ee44ea08451736f2…

MALICIOUS

RTF

155.5 KB
MD5: fe72e98139eeddc31c6dbd8751025f04 SHA-1: fb07c3ae599f7d9f47ef7d793312d1be201e2d9a SHA-256: ee44ea08451736f29ccb8e3a1118b784ac6b88425014e33095576813c0e5d94f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an RTF document that contains an embedded OLE object. Static analysis identified a critical heuristic indicating the presence of the CVE-2017-11882 vulnerability, which is a known exploit targeting Microsoft Equation Editor. 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_off000021c7.bin
01e9ce7764ba1b04d8bc83987db9aee6857be24dbdd47aeb21d31777684e3e94		 rtf-objdata-decoded RTF \objdata at offset 0x21C7 28445 bytes

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