Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 dd7a2fe3e0216485…

MALICIOUS

RTF / .DOC

39.4 KB First seen: 2023-02-20
MD5: 5ece2ed75c1177f72012da65c060c59e SHA-1: a17de6e4c87e7c40ef5391968a68c2872d7005fa SHA-256: dd7a2fe3e0216485e12aa4063c47787c1e9ba075f8f76f7fe9ac800d6eaeec97
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 containing OLE object data, which is a known method for embedding malicious content. The heuristic 'SE_ENABLE_LURE' indicates the document explicitly instructs the user to enable editing, a common social engineering tactic to bypass macro security. This suggests the file is a dropper designed to execute further malicious code upon user interaction.

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_off00005798.bin
b42f44f1c9398d47fa8d5345cee62b271cd8e8bb34db21170864881a61a0e63b
rtf-objdata-decoded RTF \objdata at offset 0x5798 1331 bytes