Malicious RTF — malware analysis report

Static analysis result for SHA-256 1a10f783d0e0a8b3…

MALICIOUS

RTF

86.9 KB
MD5: eb1bd2a3ef9c0092401dd22b44e86843 SHA-1: a50d02327f97d5ca942c818fa9aa7de7c46201b6 SHA-256: 1a10f783d0e0a8b396bada1b05a100ad1b4c6aaf08bc61d6b8c5c249f770fc41
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a critical heuristic for CVE-2017-11882, a known vulnerability in Microsoft Equation Editor. This exploit allows for arbitrary code execution, indicating a malicious intent to compromise the system.

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_off000023e2.bin
c9772f5add78ef4178544224a999fa2625377e4ed5563722e5b6d71947fcdba2		 rtf-objdata-decoded RTF \objdata at offset 0x23E2 3631 bytes

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