Malicious RTF — malware analysis report

Static analysis result for SHA-256 65a0e1c3d01b9429…

MALICIOUS

RTF

144.7 KB Created: 2018-06-07 13:16:00 First seen: 2021-02-23
MD5: 4ed9191a29755525b1a0193454d1aaae SHA-1: 0c74b9111be19cbca0ba9761ee2bcbaea0e125d8 SHA-256: 65a0e1c3d01b94293ce9f2fe20d3fcd90c2b84c885a2323578e221ff4ebd8e02
242 Risk Score

Heuristics 6

  • Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED
    RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
  • ClamAV: Xls.Malware.Sload-7135989-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Malware.Sload-7135989-0
  • \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.
  • OLE object data medium RTF_OBJDATA
    RTF contains 2 \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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00003d2a.bin rtf-objdata-decoded RTF \objdata at offset 0x3D2A 32827 bytes
SHA-256: ba38644dd1d5e8538606c701c0506076d93289a876a2b7f700a0cc356123c5fe
Detection
ClamAV: Xls.Malware.Sload-7135989-0
Obfuscation or payload: unlikely
objdata_01_off00019616.bin rtf-objdata-decoded RTF \objdata at offset 0x19616 21934 bytes
SHA-256: c3254e1eae3aafca50bc6bfbf7987577341ab13e74a386d899a188015f21965d