Malicious RTF — malware analysis report

Static analysis result for SHA-256 ec7ed030b7896720…

MALICIOUS

RTF

112.8 KB Created: 2021-07-16 07:42:00
MD5: 05a01a66b85050b5eab0b71796830d67 SHA-1: 885d50217eae39051ce30dc5edc91edbcc8bbce1 SHA-256: ec7ed030b78967202f85cf112fc4fc68c98e67a538ba2838d45669a9ae222d8a
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 exploit a known flaw for initial execution.

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_off000032c2.bin
5c53974e49c829e8cdfd310a1db1a7503205480569c5432a351a3ef7a82efa59		 rtf-objdata-decoded RTF \objdata at offset 0x32C2 3629 bytes

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