Malicious RTF — malware analysis report

Static analysis result for SHA-256 10a4e7e6ebd35c75…

MALICIOUS

RTF

29.3 KB First seen: 2019-09-30
MD5: 8fd045529558ac89d8696ba11530a8dc SHA-1: 69b841b23cb4d158401f5c4b08d529c25d57c5e7 SHA-256: 10a4e7e6ebd35c7575b5a15563ae6c5ca2657971cb23808e4017f54aba242786
82 Risk Score

Malware Insights

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

The RTF file contains an embedded OLE object with an \objupdate directive, indicating an attempt to exploit a vulnerability and execute code. The presence of OLE object data and the objupdate heuristic strongly suggest exploitation for client execution. While the specific exploit is not detailed, the structure points to a malicious document, likely delivered as a spearphishing attachment.

Heuristics 4

  • \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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00006706.bin rtf-objdata-decoded RTF \objdata at offset 0x6706 1800 bytes
SHA-256: 93675bea04341d0ffbb0ac3bec8048ae0a56c4d816777af92f552d477bed1845

Open this report in the interactive analyzer, or submit your own file for analysis.