Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 4067524e5fb49c99…

MALICIOUS

RTF / .DOC

600.9 KB Created: 2019-09-17 13:59:00
MD5: 6857205ebcb367befab83bf1c0e1a61e SHA-1: 90ea0197b2e31eb5de2798fa91030c57b95e85b8 SHA-256: 4067524e5fb49c99b0332c659647b667fd554f53d8b44ddd7d540f434d63791d
80 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1559.001 Component Object Model Hijacking

The RTF document contains embedded OLE objects, with a specific heuristic indicating that \objupdate forces OLE activation. This suggests the document is designed to exploit OLE vulnerabilities to execute embedded code. While no scripts were directly extracted, the presence of OLE objects and the RTF structure strongly implies a downloader or exploit delivery mechanism. The confidence is moderate due to the lack of directly executable script content.

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/2{\5\j\j\j\j\j

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000887ee.bin
070b12be469ca34a6bee131a2048839045a182ce9145cbaaa2993da00868ba64
rtf-objdata-decoded RTF \objdata at offset 0x887EE 3732 bytes