Malicious RTF — malware analysis report

Static analysis result for SHA-256 82c241f99c40820d…

MALICIOUS

RTF

112.5 KB Created: 2021-07-16 07:42:00
MD5: 3f1c742df9c158a99188728766db16ab SHA-1: 11f56197114c79daea0f98bd78b25e7b76eeabbb SHA-256: 82c241f99c40820dd007274a6d58d4cfb2059825271896eca122fa1ce81c6cf5
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 this known flaw.

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_off00003121.bin
c90dd5dde7b39dbd01c2e582b2bd39faeb4802943b483920d909058328cfc94f		 rtf-objdata-decoded RTF \objdata at offset 0x3121 3629 bytes

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