Malicious RTF — malware analysis report

Static analysis result for SHA-256 e4b19e924fa673a5…

MALICIOUS

RTF

721.2 KB Authoring application: Msftedit 5.41.15.1515 First seen: 2021-06-20
MD5: fd491c4c01a8de1fce6e6b151e4d4f52 SHA-1: 35a22a732644ee995e17e1192dcced3310815fcd SHA-256: e4b19e924fa673a59fbfbd08e5c96ad21b480598867e3d4595d5cc9804f60dfc
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF file contains embedded OLE objects, including a package object and PE header in hex data, indicating the presence of a malicious executable. An embedded URL was also found, suggesting a download or redirection attempt. The document body contains a simple call to action, 'clica aqui', which is likely intended to trick the user into interacting with the embedded malicious content.

Heuristics 5

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • 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://www.turkojan.com In RTF body

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000000d2.bin rtf-objdata-decoded RTF \objdata at offset 0xD2 335398 bytes
SHA-256: 0f782e702e3bbdbf759ca3fd6599b50718702e4d37ca44cccd7cfa1ad5e6e545

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