Malicious RTF — malware analysis report

Static analysis result for SHA-256 25f35887c41dcb84…

MALICIOUS

RTF

1.75 MB Created: 2019-09-17 13:59:00 First seen: 2020-05-14
MD5: 2df39ce64ad6dc5c65b162296f853188 SHA-1: 688390a766588a59f6e790e34b2aa4dfe975473a SHA-256: 25f35887c41dcb84e533031898628c5abd9cdb4634db7ed86b92183ef5883827
122 Risk Score

Heuristics 5

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • Large hex data blocks in OLE object high RTF_EXCESSIVE_HEX
    RTF contains ~1044KB of hex-encoded data inside \objdata sections — may hide a payload
  • 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 In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off001a90df.bin rtf-objdata-decoded RTF \objdata at offset 0x1A90DF 1413 bytes
SHA-256: 4e865218221c65cc4f03cc30a54917bc966792210e874b656fbc4d92038b51ad

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