Malicious RTF — malware analysis report

Static analysis result for SHA-256 c643575a225709a7…

MALICIOUS

RTF

155.7 KB
MD5: e04d9965161ff60cfd5916d81e2ceae3 SHA-1: a1e56ef44410aac65a17ff0ed2fc479879ebb232 SHA-256: c643575a225709a72062352efe9358f633434a6e8c53835af84de1ed0465cd51
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document 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 delivery mechanism. No specific family could be identified from the available evidence.

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_off000023dc.bin
c834ae3486af2f1c56d93786178f1b821a47055c1da6a10c19625897f6f2b09e		 rtf-objdata-decoded RTF \objdata at offset 0x23DC 28445 bytes

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