Malicious RTF — malware analysis report

Static analysis result for SHA-256 14b6f5f3a04a8f6b…

MALICIOUS

RTF

113.7 KB Created: 2018-07-17 13:59:00 First seen: 2021-02-23
MD5: b2bbb66f5ebccac3b3ccef14587de959 SHA-1: e5d57d406a6d8a29b267fbb679dde1e0d544574d SHA-256: 14b6f5f3a04a8f6ba5dce1a71c48d28d8c5f9ba7e2615ab55e92e85fe9db610e
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_off00003c00.bin rtf-objdata-decoded RTF \objdata at offset 0x3C00 27195 bytes
SHA-256: 81bf7a3d97389fe377e4f5dd06066b49176d55466bbeec883af2763d5590d3b8
Detection
ClamAV: Xls.Malware.Sload-7135989-0
Obfuscation or payload: unlikely
objdata_01_off00016862.bin rtf-objdata-decoded RTF \objdata at offset 0x16862 12003 bytes
SHA-256: 0944c8b68055bf18acd44765c2d37f0c60e80abe7360ed4bb9bfb9905542baa1

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