Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 1f254c145f74e5ec…

MALICIOUS

RTF / .DOC

9.3 KB First seen: 2022-08-02
MD5: 2a287eb9799346228ddc3e0c3a593651 SHA-1: c36f319b3dd5d45edaf2777cdbba61ff18756d35 SHA-256: 1f254c145f74e5ec51d070b72a6e4db55096adb8a674eb3c52494a670a15a690
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 it's designed to activate embedded objects. The heuristic 'SE_ENABLE_LURE' confirms the document instructs the user to enable editing and macros, a typical lure used by malware droppers to bypass security measures and execute malicious content.

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 2 \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_off00000db8.bin
849088af674aa2e84f9d96870dc40bfd2025b42d8db85adc618d26c9880bbb09
rtf-objdata-decoded RTF \objdata at offset 0xDB8 1790 bytes