Malicious RTF — malware analysis report

Static analysis result for SHA-256 a78b0673f4480233…

MALICIOUS

RTF

56.5 KB
MD5: 8e786de748dd8143cb2f6128dff799bc SHA-1: c206cbba12286d00cbab14b604c3635866ada865 SHA-256: a78b0673f448023379564fb38c799d62822f42bae29e2e4045ed022a164edb34
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Equation Editor. This vulnerability allows for arbitrary code execution, 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.
  • Equation Editor CLSID critical RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000010c.bin
d64c9a861131cd4037518fdc48992901d094c8bc6fedf09c3c9d95ccd55abe1f		 rtf-objdata-decoded RTF \objdata at offset 0x10C 3631 bytes

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