Malicious RTF — malware analysis report

Static analysis result for SHA-256 d62fccfaebb3b293…

MALICIOUS

RTF

90.8 KB
MD5: 6c6c130cf9b7556715bc8ee950d18c85 SHA-1: 4df50dc5f68f689d71fdfb08335113039698de86 SHA-256: d62fccfaebb3b293e286223b1e8bc9c7b6453f5491e437e7ec106ca4b5216051
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers a known vulnerability, CVE-2017-11882, within the Microsoft Equation Editor. This exploit allows for arbitrary code execution, indicating the file's primary purpose is to compromise the victim's system.

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_off0000236c.bin
c4427f0d0945827ca6b0b19e6b51221b35f2a9b44b783ef152f64c3812124c2f		 rtf-objdata-decoded RTF \objdata at offset 0x236C 3631 bytes

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