Malicious RTF — malware analysis report

Static analysis result for SHA-256 d7d1666583b3bf1c…

MALICIOUS

RTF

113.6 KB Created: 2021-07-16 07:42:00
MD5: b3294147791d09e733d3b1c997836da9 SHA-1: 66d871981e76bb94ee6908d4c5a183bf8504abd8 SHA-256: d7d1666583b3bf1cf0f70d63b5cfcb2318ab8aced9b1e7c7d8ae14f12e3a2372
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, indicating a malicious intent to compromise the user's system.

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_off000030bb.bin
5c55ed572c7caea9699f7665a70e4822dc58ff25efc6a23a8f32e6abe22577c2		 rtf-objdata-decoded RTF \objdata at offset 0x30BB 3629 bytes

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