Malicious RTF — malware analysis report

Static analysis result for SHA-256 8b39957cfd1a55e7…

MALICIOUS

RTF

155.1 KB
MD5: 824590f3ec496b0ac4f9c06fccbf720a SHA-1: 6b43f020ee03875e1136c41d48c6c139b50e6b1d SHA-256: 8b39957cfd1a55e7dc0fc39365f5b38af202e8bf79aa43162b61b7c0b9e00a44
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit attempt to compromise the user's system.

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_off0000212e.bin
f696aa11d1f53c581945d87ed682cb7fc83645948faefd0b8a4321d0b6ce2e23		 rtf-objdata-decoded RTF \objdata at offset 0x212E 28445 bytes

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