Malicious RTF — malware analysis report

Static analysis result for SHA-256 5d3b01fe486f2e1a…

MALICIOUS

RTF

159.1 KB
MD5: cc235205f8936f3bf2841f95cea388ac SHA-1: 19dac824cfa60144e584332f40711e5c738c975c SHA-256: 5d3b01fe486f2e1a36bcef17322a46fc4f01f8a0c281c2861908fbff315d1add
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a known vulnerability, CVE-2017-11882, within the Microsoft Equation Editor. This exploit allows for arbitrary code execution, indicating a malicious intent to compromise the user's 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
dcc26d650e3b3ea09f89107a15b8cc5b129469dbe374f9422b845ebd8d38bc9f
rtf-objdata-decoded RTF \objdata at offset 0x23E2 28445 bytes