Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 1648f60920b2163c…

MALICIOUS

RTF / .DOC

210.1 KB First seen: 2022-10-12
MD5: d84c075c65ae79b80596ee1087545c55 SHA-1: ac6b4b5eb552a3a2a73aa77cc4de8866f4629bac SHA-256: 1648f60920b2163ca2c6894018cbdf1ac8cb946f4104c8f27362b7656a36abe6
80 Risk Score

Malware Insights

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

The RTF document contains OLE object data and uses an \objupdate directive, indicating an attempt to activate embedded objects. The heuristic SE_ENABLE_LURE confirms that the document instructs the user to enable editing and macros, a typical social engineering tactic to bypass security measures and facilitate malware execution.

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_off00001a6c.bin
30e75b65a8ff7fb33f11b20b6418834c706fe8d9d2518aba70c8e889ecf76f3f
rtf-objdata-decoded RTF \objdata at offset 0x1A6C 1766 bytes