Malicious RTF — malware analysis report

Static analysis result for SHA-256 84ede6049bac0873…

MALICIOUS

RTF

107.2 KB First seen: 2021-09-15
MD5: 09bff38c81cde568cbf9b385493e7370 SHA-1: 815027a161a04b0cb04d49b567606b03d78aa48b SHA-256: 84ede6049bac0873092f4af110ce13ca49069f275d4df2b59dbe50f8eb860c10
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a critical heuristic for CVE-2017-11882, indicating exploitation of the Equation Editor vulnerability. This vulnerability is commonly used to achieve arbitrary code execution.

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_off00000151.bin rtf-objdata-decoded RTF \objdata at offset 0x151 3627 bytes
SHA-256: 5d2fede66a017b7e77d76299a823e2b47f173ae66ea06cc9778b34ad018bbb50

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