Malicious RTF — malware analysis report

Static analysis result for SHA-256 2b54f6309f49ea36…

MALICIOUS

RTF

152.6 KB
MD5: 1d902c042a3c6fe955ef76c3b80a6b60 SHA-1: 66f5b6be82307bdcfb2cfa9a9f6184007620a6f6 SHA-256: 2b54f6309f49ea36bc7a2da3d2e36a09bcda364e534894ce73fdf5ef6d4231dc
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a critical heuristic for CVE-2017-11882, indicating exploitation of the Equation Editor vulnerability. This vulnerability allows for arbitrary code execution, 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_off000023a7.bin
23cbdb0a7e4c244b5bd35a7c66826fe7c6d94c782b53d46147d7d58be03a22ab		 rtf-objdata-decoded RTF \objdata at offset 0x23A7 28447 bytes

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