Malicious RTF — malware analysis report

Static analysis result for SHA-256 94ee80dd4569d627…

MALICIOUS

RTF

112.0 KB Created: 2018-07-13 12:26:00 First seen: 2021-02-23
MD5: db4d30f4161223a2724bc36af1178057 SHA-1: aa7e31fdef83e8c7044794023786d85600e603c9 SHA-256: 94ee80dd4569d627da5c0af97a3668827495df37af8e6c4d46bb8729795da30c
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_off00003c43.bin rtf-objdata-decoded RTF \objdata at offset 0x3C43 25147 bytes
SHA-256: 77d5a22b1ccc63c5816ff6fd7aa7c08b67b7374e4216fef0e37ac9695f0f3288
Detection
ClamAV: Xls.Malware.Sload-7135989-0
Obfuscation or payload: unlikely
objdata_01_off000158fe.bin rtf-objdata-decoded RTF \objdata at offset 0x158FE 13079 bytes
SHA-256: 3e4c7ec11f166a517fe6bab75755579c0336183463af0d1eb84df1c2bd37a537