Malicious RTF — malware analysis report

Static analysis result for SHA-256 d99f44ef05fe8c4c…

MALICIOUS

RTF

50.9 KB
MD5: ec8fe405704cc526181d4bf7367a1e22 SHA-1: e75c9fedffa88871efe273c9ab5d123b4424080d SHA-256: d99f44ef05fe8c4c73cabb443eb3fb884b590b370587f255fecc5a1f3720ab6d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that leverages a known vulnerability in Microsoft Equation Editor (CVE-2017-11882). This exploit allows for arbitrary code execution, indicating a malicious intent to compromise the user's system. No specific family could be identified from the available evidence.

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_off0000010f.bin
72f06c0a33aed2ab9f4fcbf9b71335470e4876d45348ddbbd87217fac51cec96		 rtf-objdata-decoded RTF \objdata at offset 0x10F 3631 bytes

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