Malicious RTF — malware analysis report

Static analysis result for SHA-256 c232d7c6db5a2b0d…

MALICIOUS

RTF

288.0 KB Created: 2021-09-04 08:26:00 First seen: 2021-09-16
MD5: d7a5dd9a349fc5f8595e9408d3af28c6 SHA-1: d11bf55d07256616f369199cc524593c75c45b64 SHA-256: c232d7c6db5a2b0d8f97e97652666c78dc68288c9cd5920d2f33e3b3f86c6d09
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 exploit allows for the execution of arbitrary code, indicating a malicious intent to compromise the system. No specific malware family could be identified from the available evidence.

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 In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000031f4.bin rtf-objdata-decoded RTF \objdata at offset 0x31F4 9200 bytes
SHA-256: 1c8a1f0dafb0f9454612ae13ae0da8baa0e57f0e29cd379a5f1b54526c0df4c6

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