RTF malware analysis — malicious · efff613131542c9c

MALICIOUS

RTF

608.1 KB First seen: 2024-06-28

MD5: 06abdd9174e32c4605c3afbbd155f2c5 SHA-1: 258369cae365f6fb057c2f021f615b6a8ab1c18f SHA-256: efff613131542c9c4e4acd46ca0057891ccfe65b243149224d3fc7ccd3374743

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 RTF file contains OLE object data and an \objupdate directive, indicating it's designed to activate embedded objects. The document body provides a lure about financial audits, instructing the user to 'Enable editing', a common tactic to bypass security measures and execute embedded malicious content. No scripts were extracted, but the heuristics strongly suggest a macro-based or OLE-based execution of 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.

Filename	Kind	Source	Size
`objdata_00_off0002a751.bin` `ca6180e3a31b4276a8b2bb3b27badf21e91f57e27d8f0e01821deba71f5d8991`	rtf-objdata-decoded	RTF \objdata at offset 0x2A751	1870 bytes

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