Malicious RTF — malware analysis report

Static analysis result for SHA-256 278faaee28b93f8a…

MALICIOUS

RTF

185.9 KB Created: 2019-09-17 13:59:00 First seen: 2020-05-14
MD5: ed326f2bdda86c75fdb0462bc0691a44 SHA-1: 73936b25079b89dad14b822e87b51675ae8cb84f SHA-256: 278faaee28b93f8ae3d50b90372ea3f5daac77166d11c88e9a3605076d3cf0bc
162 Risk Score

Heuristics 6

  • ClamAV: Rtf.Dropper.Agent-7700972-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Dropper.Agent-7700972-0
  • \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 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0002dc59.bin rtf-objdata-decoded RTF \objdata at offset 0x2DC59 1350 bytes
SHA-256: 6a502a05013bbad7194da2742cec0217fcd1875cce6cf00b27225f181744a43d
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: SC_STR_LOADLIBRARY, SC_STR_URLDOWNLOAD, SC_PEB_ACCESS Static shellcode analysis recovered API/import strings: LoadLibraryW, GetProcAddress, URLDownloadToFileW, ExitProcess