Malicious RTF — malware analysis report

Static analysis result for SHA-256 1a1fdd572b6a0ccf…

MALICIOUS

RTF

159.5 KB
MD5: 8df68c958f78590fb66386f85c04a44a SHA-1: 730de06b4a0bc15d0dfa81a9faa387fb591c3c11 SHA-256: 1a1fdd572b6a0ccf85f668f94e8a8b3309ea60eb3986ccf059c573f9cf3274ff
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 heuristic for CVE-2017-11882, a known vulnerability in Microsoft Equation Editor. This vulnerability allows for the execution of arbitrary code, indicating a likely exploit attempt. No other specific malware family indicators were identified.

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_off000022e1.bin
75d0860c99ac3e28a771cf00273699bd20c343c8110b797cbfe2f6202ae85585		 rtf-objdata-decoded RTF \objdata at offset 0x22E1 28445 bytes

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