Malicious RTF — malware analysis report

Static analysis result for SHA-256 f9d7e199e9db74d8…

MALICIOUS

RTF

155.8 KB
MD5: 03c965bb029780c3a0c6256fa22964ed SHA-1: da04e7a19e5f0bc5c9ee563808247044ca574774 SHA-256: f9d7e199e9db74d86512c138b8c1a58b8eb3842e5ca9b7a4955b29860478b42d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, 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_off00002329.bin
57d88d9a21d26980d5f732890dffa739320adfc3deaf112a0d2c55bbfe78db27		 rtf-objdata-decoded RTF \objdata at offset 0x2329 28445 bytes

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