Malicious RTF — malware analysis report

Static analysis result for SHA-256 6d24eefa6acf6cb0…

MALICIOUS

RTF

168.2 KB
MD5: 2a3c1942a8ed103dd6d4fc3c795ca12b SHA-1: 54fbe6ca5aa016f2b01df4393e29f2e2e1b2f401 SHA-256: 6d24eefa6acf6cb095ed57052168a34eacaad02731a3f3b57cd25451b328b4b2
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers a buffer overflow vulnerability in Microsoft Equation Editor (CVE-2017-11882). This vulnerability allows for the execution of arbitrary code, likely to download and run 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_off000023d9.bin
a6cf8f4578c8a8e1d8c89101e64e72935f82c9da04a2e821cf5c3bad65834507		 rtf-objdata-decoded RTF \objdata at offset 0x23D9 28445 bytes

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