Malicious RTF — malware analysis report

Static analysis result for SHA-256 246471d90780689f…

MALICIOUS

RTF

112.0 KB Created: 2018-07-13 13:06:00 First seen: 2021-02-23
MD5: 71825921694c9cca26254822eb1517cb SHA-1: b91dd0d856b97c8b0efb08d21b4363abc21b8c06 SHA-256: 246471d90780689fa0236f77b037ba6d6320fdc3543ea88cd97782899d4ebda5
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_off00003c2b.bin rtf-objdata-decoded RTF \objdata at offset 0x3C2B 24635 bytes
SHA-256: 1fc454c6b67088c681423efd6db1bd809e4a2eacca105ec7d49e824fbad928f7
Detection
ClamAV: Xls.Malware.Sload-7135989-0
Obfuscation or payload: unlikely
objdata_01_off0001546d.bin rtf-objdata-decoded RTF \objdata at offset 0x1546D 13659 bytes
SHA-256: 8e7b150fa5a9729a8c7de21cfd13fcb4e3f54ac678f82fd83458f09579093a7f