Malicious RTF — malware analysis report

Static analysis result for SHA-256 6e2b7a094b6dc5bc…

MALICIOUS

RTF

80.1 KB First seen: 2024-08-20
MD5: 03c634f3b71f5dcfca4f2016482bf5f2 SHA-1: b559111214ecd6318c86acc86836fbc96ac7ebf6 SHA-256: 6e2b7a094b6dc5bcf9880332f39b6dd6eefd711d6835bb289493cae6896c26b9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that leverages a known vulnerability in the Equation Editor. The presence of `

Heuristics 3

  • Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITOR
    RTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000141b.bin
108e5aa6257fe0b2ae5461a28ef050e64b2883eabf4ba4c287a9a3c37007ba1d		 rtf-objdata-decoded RTF \objdata at offset 0x141B 1601 bytes

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