Malicious RTF — malware analysis report

Static analysis result for SHA-256 6675cc2593072b77…

MALICIOUS

RTF

117.4 KB Created: 2021-07-16 07:42:00
MD5: 1c99b8b06b3b6a2bc7e23b5690e13bb8 SHA-1: 73e46f5b4fc34aafa526bd4d264281b83d1188aa SHA-256: 6675cc2593072b771d7be0a0544f7d23404479ce7b073b71381ee164171b2168
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 system. No specific family could be identified, but the exploit is a common method 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_off000032b7.bin
7846b7d87abcfbb5892d9dff178e364e56a4a693d7af68ad8f63d3e7585c7b12		 rtf-objdata-decoded RTF \objdata at offset 0x32B7 5885 bytes

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