Multios.Exploit.Matryoshka-5742579-0 — RTF malware analysis

Static analysis result for SHA-256 7c25a5cd3684c470…

MALICIOUS

RTF

51.6 KB Created: 2016-12-23 12:27:00 First seen: 2020-12-25
MD5: 2f04b8eb993ca4a3d98607824a10acfb SHA-1: a5ad744088e2739dc8b6a0622432106158d0abd8 SHA-256: 7c25a5cd3684c470066291e4dec7d706270a5392bc4f907d50b6a34ecb793f5b
82 Risk Score

Malware Insights

Multios.Exploit.Matryoshka-5742579-0 · confidence 90%

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ClamAV with the signature Multios.Exploit.Matryoshka-5742579-0. Static analysis revealed RTF_OBJDATA, indicating the presence of embedded OLE objects which are often used to deliver exploits. The document body itself appears to be benign NATO-related text, but the embedded object is the primary indicator of malicious intent.

Heuristics 3

  • ClamAV: Multios.Exploit.Matryoshka-5742579-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Multios.Exploit.Matryoshka-5742579-0
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • 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 In RTF body
    • http://www.adobe.com/2006/flex/mx/internalIn RTF body
    • http://adobe.com/AS3/2006/builtinIn RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002bbe.bin rtf-objdata-decoded RTF \objdata at offset 0x2BBE 6902 bytes
SHA-256: 486c099fc466758d4db1aa522ff1437577147d33d8095e043f56e25be750c623

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