Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 b4258298f0ec745f…

MALICIOUS

RTF / .DOC

463.4 KB First seen: 2024-05-29
MD5: 2d6784ca19c6f190f9b91de86e25f5a9 SHA-1: bb177ff22100e3d0d28b5d787ddd9514741d795b SHA-256: b4258298f0ec745fcff919bdeffa56212313c2f1c40fd699c316a70143fa0565
80 Risk Score

Malware Insights

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

The file is an RTF document containing OLE object data and an instruction to enable editing, which is a common lure for macro-based malware. The heuristic 'SE_ENABLE_LURE' directly indicates the document's intent to trick the user into enabling malicious content. This suggests the document is a downloader or dropper for a secondary payload.

Heuristics 3

  • \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
  • 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_off00015f63.bin
09a6779bbaebdcd54da3010513580a2f279f91893faccc283021b77e3f6b5b72
rtf-objdata-decoded RTF \objdata at offset 0x15F63 2060 bytes