Malicious RTF — malware analysis report

Static analysis result for SHA-256 c5c0df8feaa1115f…

MALICIOUS

RTF

91.0 KB
MD5: c373cecfbd04ea4e91ed36b37514c563 SHA-1: adfbcc4283b3ec1e02b275d6de912a724c5a6ce4 SHA-256: c5c0df8feaa1115f892fb67e06f35494fbff7f951a8e32f6cf92936c7bd0f23e
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers a critical vulnerability, CVE-2017-11882, in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit delivery mechanism.

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_off000023e4.bin
28b798ec64b4f9ff1fe88b6525a3f1c216a505e2b217f1849c3d0503883f22f9		 rtf-objdata-decoded RTF \objdata at offset 0x23E4 3631 bytes

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