Malicious RTF — malware analysis report

Static analysis result for SHA-256 514415399474b871…

MALICIOUS

RTF

79.0 KB
MD5: 0b01bafce2fdb1d75cd0a570033001b4 SHA-1: ba32e1da913d6f611bfbdd8055c636ed8864330d SHA-256: 514415399474b871828f2d9971a7be5b939966e79258e7abce70e1e93250789e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an RTF document containing an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, indicating a likely exploit delivery mechanism.

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_off000023c3.bin
55524442ba3534cb1d8223d62dbebc1f649a7d30635da4c776f2b5ef33d76158		 rtf-objdata-decoded RTF \objdata at offset 0x23C3 3631 bytes

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