Malicious RTF — malware analysis report

Static analysis result for SHA-256 9350354307a45f2b…

MALICIOUS

RTF

51.6 KB
MD5: 0e1cce4e8febeed6ce18b63d6cdc8c8f SHA-1: 0015039e5e091087c0cf4ce4368e594493e5ca75 SHA-256: 9350354307a45f2ba567ea3f9df8b8c710774d330cacf79aa2f90ed3ab8fe4ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains critical heuristic firings indicating the presence of the CVE-2017-11882 Equation Editor vulnerability. This vulnerability is exploited via a malformed OLE object within the RTF, which allows for arbitrary code execution. No further details on the payload or its behavior were extracted.

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_off00000114.bin
a49e585b617bf6aa29c1033a707d266852b027af32246265d12d2e8d6c392f14		 rtf-objdata-decoded RTF \objdata at offset 0x114 3631 bytes

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