Malicious RTF — malware analysis report

Static analysis result for SHA-256 a7b193660d9c6753…

MALICIOUS

RTF

113.2 KB Created: 2021-07-16 07:42:00
MD5: 250095376eed48c19e384102fd93866f SHA-1: 334764e50991352db34904190a825458007ba0cb SHA-256: a7b193660d9c67530e8a809a3da2a12c88d33ddaa5a709f3671bd892f8af16ab
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 the execution of arbitrary code, indicating a likely exploit attempt. 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000032eb.bin
c81774a78a3638e977fb3db54fbcfc96f91108770896d9cc13856d4c0b7ed30e		 rtf-objdata-decoded RTF \objdata at offset 0x32EB 3629 bytes

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