Malicious RTF — malware analysis report

Static analysis result for SHA-256 945144c616611787…

MALICIOUS

RTF

90.0 KB Created: 2021-07-16 07:42:00
MD5: 7f4784fc371239f0370571aea9b8f4da SHA-1: 714337a564be61423d71c1b78d512ac7e07ed40a SHA-256: 945144c616611787e7b15d17dd6fb9b5d6ff7a419ffdd227d65d904d28c76300
102 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, likely to download and run a secondary payload.

Heuristics 4

  • 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
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000032e4.bin
46fab67ba0dbcb57ff68e6cd105f0affd58f28120bc3d7ac09a3c13d436acfe3		 rtf-objdata-decoded RTF \objdata at offset 0x32E4 3629 bytes

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