Malicious RTF — malware analysis report

Static analysis result for SHA-256 5faacd1f4ca85305…

MALICIOUS

RTF

112.9 KB Created: 2021-07-16 07:42:00
MD5: 3cf3f38a9130751c8d227006ce37f91d SHA-1: f9d683213a22909bbbb207071c3d1029799aed9f SHA-256: 5faacd1f4ca85305f21fbffba5b50ca69305d9fcb71ccfa56616606ace67d590
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 when the malformed object is processed. The embedded object's data is the primary indicator of compromise.

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_off000032de.bin
6b0c09d7c99c6ebf5d54f30c2147590e51a996c0ef9c415842004d04e8d24945		 rtf-objdata-decoded RTF \objdata at offset 0x32DE 3629 bytes

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