Malicious RTF — malware analysis report

Static analysis result for SHA-256 8d5a3c8f0eb883f0…

MALICIOUS

RTF

417.7 KB Created: 2020-02-12 First seen: 2020-05-14
MD5: 6f86894f740dc40604d50cef02937c08 SHA-1: f65cf0d00b99684e32540e56bcf78be804ad77dd SHA-256: 8d5a3c8f0eb883f00848a3045b4afa46e98f2dd1b5672cea031f5535322b6b8d
142 Risk Score

Heuristics 5

  • Suspicious extracted artifact critical 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.
  • \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
  • 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
    • http://bit.ly/2wuARI3In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0005d07a.bin rtf-objdata-decoded RTF \objdata at offset 0x5D07A 1438 bytes
SHA-256: 8c4fe2d0c438efc21bcad53ebdd3b92eb7c6ffc5af2b5247e63ca85dc3150463
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Static shellcode analysis recovered URL(s): http://bit.ly/2wuARI3 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: LoadLibraryA, GetProcAddress, URLDownloadToFileA, ExitProcess