Malicious RTF — malware analysis report

Static analysis result for SHA-256 badacbfe410673d8…

MALICIOUS

RTF

55.9 KB
MD5: f2340f2a47de36693fff2359415bf5c0 SHA-1: b7e8e5c3ee1e4c49cc5b15968b9524720c6abbbf SHA-256: badacbfe410673d8f1e90b7cc0ebd3dd6bb1989db2cc61ab9bf2f4060bc50a96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains embedded OLE object data, specifically triggering critical heuristics for CVE-2017-11882 related to Microsoft Equation Editor. This indicates the file is designed to exploit a known vulnerability in the Equation Editor component to achieve arbitrary code execution upon opening.

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_off00000108.bin
abbb43e5338cf50a30f12fac33a682b7cfcbedd183b9c973b5741721f673f1ed		 rtf-objdata-decoded RTF \objdata at offset 0x108 3631 bytes

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