Malicious RTF — malware analysis report

Static analysis result for SHA-256 5281dbc2cd0f6803…

MALICIOUS

RTF

100.4 KB
MD5: 807b73b983cb070fa11ecc8c80621686 SHA-1: 9ecc101d43098e09c7df64758e7c720fc52bcad9 SHA-256: 5281dbc2cd0f68039d0784c290456355058ca07480fd90bff23a5657dc75c0bf
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This exploit allows for arbitrary code execution, 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_off00002362.bin
3fc560b4a844d2192104ff33a287e57313443c9662b167100df49dfa479a73dd		 rtf-objdata-decoded RTF \objdata at offset 0x2362 3631 bytes

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