Malicious RTF — malware analysis report

Static analysis result for SHA-256 7badc3a4f62160d9…

MALICIOUS

RTF

55.7 KB
MD5: 34ad20d708750b542a7c8d81a4f552ff SHA-1: 98ae27d8de4c15fe7b10e3af7b0e80dd03f5d1ef SHA-256: 7badc3a4f62160d9301048bb98b49570597549c850f086ab46a8de444e9f74d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers a known vulnerability, CVE-2017-11882, in the Equation Editor component. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit delivery mechanism. No further stages or specific family indicators were identified.

Heuristics 4

  • 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.
  • Equation Editor CLSID critical RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • 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_off00000123.bin
5622a408520794dd117f3cdf550affb4b6d6a2f1e32cff9fd8faa4c117173022		 rtf-objdata-decoded RTF \objdata at offset 0x123 3631 bytes

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