Malicious RTF — malware analysis report

Static analysis result for SHA-256 77e0b9b807f95f3c…

MALICIOUS

RTF

190.6 KB Created: 2021-07-16 07:42:00
MD5: e4786ca054357adca76e6ad6550c9711 SHA-1: 1aad4d59d1d19cb7a6eb9df60042a9edcf37ff93 SHA-256: 77e0b9b807f95f3cca83b5496f03841d2025e84f861b44c9ba2b9a8b8418e33a
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 user's system. No document body or script content was available for further analysis.

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_off00003340.bin
82774f6027e1bc5db33e745b63f6b2e7fd8ce0b43c75a7e47ca1e2cd157fac23		 rtf-objdata-decoded RTF \objdata at offset 0x3340 41981 bytes

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