Malicious RTF — malware analysis report

Static analysis result for SHA-256 5959cda76d3ad875…

MALICIOUS

RTF

72.5 KB
MD5: a660402ae2d42b3e9e77a40b8420c462 SHA-1: 9c41da9307eb0d2aff7b3fdde4aa1dfd425974f7 SHA-256: 5959cda76d3ad875c91dfda9a2c8571cfbd5acd77217985eca3d9c18347ef61d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that exploits the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution when the object is processed, likely leading to the download and execution of a secondary payload.

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_off000001cf.bin
2313dce944efc26ea47f97641511535e42e2b6198c2f7996ca577fe01b13be04		 rtf-objdata-decoded RTF \objdata at offset 0x1CF 3631 bytes

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