Malicious RTF — malware analysis report

Static analysis result for SHA-256 0f54a6f761676b9a…

MALICIOUS

RTF

89.1 KB
MD5: 384f519301cfd42812a23143a8c02b00 SHA-1: bba7915a5c224d6e619ebfeec9981ad89d7ad622 SHA-256: 0f54a6f761676b9afb650a61594016d157e8781eeabec3da50c76d113ad2f9ec
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 allows for arbitrary code execution on the victim's machine. No further stages or IOCs were extracted from this sample.

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_off000023b3.bin
2116acab5e5ed28426eefc636134af79a2ba85754b83c99fd0fbf1ca539ec20e		 rtf-objdata-decoded RTF \objdata at offset 0x23B3 3631 bytes

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