Malicious RTF — malware analysis report

Static analysis result for SHA-256 01cad103f5dab141…

MALICIOUS

RTF

276.9 KB Created: 2018-04-24 08:49:00 First seen: 2021-02-23
MD5: ba5e6b7d04f44139f864584c2b29af83 SHA-1: ff64468a1e8f248e52e3c13f9d5fd9fe376c5ef2 SHA-256: 01cad103f5dab141f4a01714bfd781993985fd49418b918ded12dbeaaaa2536d
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: Doc.Macro.Obfuscation-6391394-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Macro.Obfuscation-6391394-0
  • \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 4 \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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00002922.bin rtf-objdata-decoded RTF \objdata at offset 0x2922 29243 bytes
SHA-256: c257c78e7ff811a43604fab025f63b5a5463ff191faaeec3c9db0e5f2c3d5934
Detection
ClamAV: Doc.Macro.Obfuscation-6391394-0
Obfuscation or payload: unlikely
objdata_01_off00016554.bin rtf-objdata-decoded RTF \objdata at offset 0x16554 29243 bytes
SHA-256: 1085e0d3098dd193e85ff57b39b45430fc555a19740f67cb675f37fd607e9575
Detection
ClamAV: Doc.Macro.Obfuscation-6391394-0
Obfuscation or payload: unlikely
objdata_02_off0002a201.bin rtf-objdata-decoded RTF \objdata at offset 0x2A201 29243 bytes
SHA-256: bf89ab97e0e490f26060e2c21bf36dc0052bef7a84feda41ba2fb91e1ff0ea59
Detection
ClamAV: Doc.Macro.Obfuscation-6391394-0
Obfuscation or payload: unlikely
objdata_03_off0003deb0.bin rtf-objdata-decoded RTF \objdata at offset 0x3DEB0 14870 bytes
SHA-256: abbc892b953b329446c274b1e89b8955bca1a89d5fe0facd2c4dd2d6db2166f3

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