Malicious RTF — malware analysis report

Static analysis result for SHA-256 9c6dd0e7e435fb29…

MALICIOUS

RTF

100.7 KB
MD5: 098f36cce4ce494064cd3c7bc8a1bd2a SHA-1: 3957c540a14daf78f996e2ab44ac69adfe5d73e4 SHA-256: 9c6dd0e7e435fb29e6215eaa7acb0aa0553b13d3fee80d26c2836567b051083e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers a buffer overflow vulnerability in Microsoft Equation Editor (CVE-2017-11882). This vulnerability allows for the execution of arbitrary code, likely to download and run a secondary payload.

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_off000023ca.bin
652efb110991e948a4dd06c41d67f387543ee973d9f8157051bf2b100d60b939		 rtf-objdata-decoded RTF \objdata at offset 0x23CA 3631 bytes

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