Malicious RTF — malware analysis report

Static analysis result for SHA-256 aaae40aaeac97853…

MALICIOUS

RTF

111.5 KB Created: 2021-07-16 07:42:00
MD5: 094fba2b38cd1ae0e3e38d61c13fbba2 SHA-1: 460a96c97c20a07413168c0a8f89cf79e714af48 SHA-256: aaae40aaeac97853bffd7b098da9a451404c58af2fe0633f14ba76067e8542bc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution, likely to download and run a secondary payload.

Heuristics 4

  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000030ff.bin
e16385feb81b52616aba4d30c55321c46cffd1774bb7ff59b519eb1747d68d27		 rtf-objdata-decoded RTF \objdata at offset 0x30FF 3629 bytes

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