Malicious RTF — malware analysis report

Static analysis result for SHA-256 1ef0584346321737…

MALICIOUS

RTF

98.5 KB
MD5: 5310dbd5d9e5d8f1aebf861d7a63ae22 SHA-1: 176c939101e508efc02c607e3659225683c18663 SHA-256: 1ef0584346321737b3cb7d1be8ca1c8a116410e6f52a229491fea35e57f6982d
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 firing for CVE-2017-11882, indicating the exploitation of a known vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution when the document is opened.

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_off0000241c.bin
e2a081da9d6a13ee8c907d89ac62c3d9804ea3f15d09312541b148faad26a308		 rtf-objdata-decoded RTF \objdata at offset 0x241C 3631 bytes

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