Malicious RTF — malware analysis report

Static analysis result for SHA-256 a17a88106f353a68…

MALICIOUS

RTF

53.7 KB
MD5: 817cb69689240613d10cab1f3f19ee43 SHA-1: 2ae35ad6f70134e7244306c1ce4dd67c013e3cbf SHA-256: a17a88106f353a6844ca178b7d3fe74d60f8aa60bc863b5cfb72dfe883726754
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that leverages a known vulnerability in Microsoft Equation Editor (CVE-2017-11882). This vulnerability allows for arbitrary code execution when the object is processed. The presence of the Equation Editor CLSID and the specific font record overflow pattern strongly indicate exploitation.

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_off0000010c.bin
fe1bc6cc6ae3a633bf8da1eeb5bbf6c8074348222e86866183a891e004e98a1b		 rtf-objdata-decoded RTF \objdata at offset 0x10C 3631 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.