Malicious RTF — malware analysis report

Static analysis result for SHA-256 aef99e38ca999841…

MALICIOUS

RTF

107.9 KB Created: 2021-07-16 07:42:00
MD5: f7f65a75a10a343e51df74822ac2a4a9 SHA-1: e04399ebf18abea8c60322cb94d002baa3c5a4ba SHA-256: aef99e38ca999841158574eac2ef2a8f5008bf17630b3c6659d307cfaaae7ef2
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 malware family could be identified.

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_off000030bd.bin
7758191a7325458370dc442b4cb0354477dcce7b779f628a60c36b15eae2e56e		 rtf-objdata-decoded RTF \objdata at offset 0x30BD 3629 bytes

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