Malicious RTF — malware analysis report

Static analysis result for SHA-256 b4f2ce233d83206b…

MALICIOUS

RTF

72.1 KB
MD5: 291037d9d8d44739d88668dfd1437589 SHA-1: bba17eac0b8311de1add5250442d1ec8d346b619 SHA-256: b4f2ce233d83206b1b40e4b1dd8d2e3517b4d7e4e55aef953e69c9ba58878695
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an RTF document that contains an embedded OLE object. Static analysis identified a critical heuristic match for CVE-2017-11882, indicating exploitation of a known vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution when the embedded object is processed.

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_off0000010e.bin
0ac3ca141a689fb10f0d1827fbb680564e2909a7f4ab58a07ded9f900cfd0104		 rtf-objdata-decoded RTF \objdata at offset 0x10E 3631 bytes

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