Malicious RTF — malware analysis report

Static analysis result for SHA-256 77cc9ea731e07513…

MALICIOUS

RTF

116.9 KB First seen: 2021-09-16
MD5: d23796a5d653a47d5cbe38316867543d SHA-1: 207f666eae94a79eb254ab46f95ffe4c15b4ab86 SHA-256: 77cc9ea731e0751337d0191a44e572aea2b535ae43e9be309bd02a135cd59af9
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

This RTF document was flagged as malicious. Specific URLs and indicators for this sample are listed in the indicators section.

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_off00000055.bin rtf-objdata-decoded RTF \objdata at offset 0x55 3627 bytes
SHA-256: 5d2fede66a017b7e77d76299a823e2b47f173ae66ea06cc9778b34ad018bbb50

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