Malicious RTF — malware analysis report

Static analysis result for SHA-256 12aba0f6ff13dfa5…

MALICIOUS

RTF

271.5 KB Created: 2021-02-12 04:30:00
MD5: 69f9fe643187f5b6a278e975de00eeac SHA-1: a1f119990e731c74445d5a615e908d600f3a54a1 SHA-256: 12aba0f6ff13dfa585abdf68e512adc09fdc1b7a8c0d2ef430f021b56504bcc2
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 arbitrary code execution, which is typically used to download and execute a second-stage payload. The document body content appears to be a lure, listing schools and refugee information, which is unrelated to the exploit itself.

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_off00001bc4.bin
2ce3d3a4ad216e4e37018b458cde742cf5a67d45579c649f822d7886569a3e02		 rtf-objdata-decoded RTF \objdata at offset 0x1BC4 3619 bytes

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