Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 a4d6399b38c8a195…

MALICIOUS

RTF / .DOC

383.3 KB First seen: 2024-07-01
MD5: 0ef15a013425098f633fb0e5df19891f SHA-1: a3f7887bb1dadfb94448f2c80840cc5a199d38dc SHA-256: a4d6399b38c8a1957fde6f8f13f46bdd361751cc787514809df8bd358fa165c8
100 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment

The RTF document contains embedded OLE objects and uses an objupdate heuristic, indicating an attempt to activate embedded content. The document body includes a lure instructing the user to 'click Enable editing', a common tactic for macro-based malware delivery. The presence of OLE objects and the lure strongly suggest the document is designed to exploit user trust to execute a payload.

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
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000176c8.bin
cefb2e0708f5fc5b0ee38a3abed0f92a261187b8e097cfcd6e1d7f8e71aa6ce5
rtf-objdata-decoded RTF \objdata at offset 0x176C8 1959 bytes