Malicious RTF — malware analysis report

Static analysis result for SHA-256 e93752d70ae8a15c…

MALICIOUS

RTF

166.6 KB
MD5: f4468904e5b7263b541b95eb9a3703d2 SHA-1: 48e35a8f7193d3b645ca782cfe9583625aed6266 SHA-256: e93752d70ae8a15c9e5399d539bfeefb72e184eef3c443bb29398e3c2386eff3
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. 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_off0000239e.bin
0eddb9d13d4c0f88364ce1187e0179199f1382795e6f72ff4e5536664e4c6025		 rtf-objdata-decoded RTF \objdata at offset 0x239E 28445 bytes

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