Malicious RTF — malware analysis report

Static analysis result for SHA-256 0d0b373bcbee8714…

MALICIOUS

RTF

155.9 KB
MD5: f76362dacb2b6ecce00b9cae22cc315f SHA-1: 9e0bfe31310b54ef1ccab1d06f5c8d8116af296f SHA-256: 0d0b373bcbee871459e6dc92413669611d5a42747ee950922cb9ed15f0eb017b
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 in Microsoft Equation Editor (CVE-2017-11882). This exploit allows for arbitrary code execution on the victim's machine. No further stages or specific family indicators were identified in the static analysis.

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_off000023ae.bin
7daf938be0d8c5f5a2b2fcd6c97ec066b446d67f422af9078cc61742285faa7f		 rtf-objdata-decoded RTF \objdata at offset 0x23AE 28445 bytes

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