Malicious RTF — malware analysis report

Static analysis result for SHA-256 e2b398c60a14df05…

MALICIOUS

RTF

86.0 KB
MD5: dd7208de298f37bb082ec1995f6ccd5c SHA-1: 9450a929e0f27d34d1eb4fb93cc80a2e05cc59a7 SHA-256: e2b398c60a14df05765525e54c1ba5d5b2cfe92486f5310c5dcc87fc603dda08
100 Risk Score

Malware Insights

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

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in the Equation Editor. This vulnerability allows for arbitrary code execution, indicating a likely attempt to deliver a malicious payload. No specific family could be identified from the available evidence.

Heuristics 3

  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002354.bin
12eb50a0427ae8b6d7ecbed974086a0e11e8b91cd73bc14f10bfeb67a423528b		 rtf-objdata-decoded RTF \objdata at offset 0x2354 3631 bytes

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