Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 0be35d90cd6cb798…

MALICIOUS

RTF / .DOC

29.9 KB First seen: 2023-02-22
MD5: e7305f7f795a5c7d7ad1adda6cb900a3 SHA-1: a384d04e2f037ca00b6aa06b139d5b2e57928279 SHA-256: 0be35d90cd6cb798bacb9c0e9e945128a75d0b33236b2df59c025a7d0020c30c
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 sample is an RTF document that contains OLE object data and an instruction to enable editing, which is a common lure for macro-based malware. The heuristic 'SE_ENABLE_LURE' specifically indicates that the document instructs the user to enable macros or editing. This suggests the document is designed to bypass security settings and likely download a second-stage 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_off00001f82.bin
b173e3048766e24a01e0267788b9a7191ea11a5e9af0f9ccf382c48bae7daf35
rtf-objdata-decoded RTF \objdata at offset 0x1F82 1658 bytes