RTF malware analysis — malicious · 3a5752df2f4f356f

MALICIOUS

RTF

145.2 KB First seen: 2024-06-03

MD5: c3cfeff7862471924d524a2d861b2647 SHA-1: 9739cb7b3020abf3c4455b0f260456ed1cee63a5 SHA-256: 3a5752df2f4f356f0dbd705cd79fc8777183143c3e1ecf1f31dfa0ea30e23fc5

140 Risk Score

Malware Insights

MITRE ATT&CK

T1204 User Execution T1204.002 Malicious File

The sample is an RTF document that contains OLE object data and triggers heuristics for Equation Editor exploitation and object activation. The document body contains a lure instructing the user to 'Enable editing', which is a common tactic for macro-based or exploit-based document attacks. The critical heuristic for Equation Editor exploitation suggests a vulnerability is being targeted, likely to achieve initial execution.

Heuristics 4

Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITOR

RTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
\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_off00008e8b.bin` `213435e015bdd5ec2587abcc6de3ec83aa4dacf5c831963274b65085116de70d`	rtf-objdata-decoded	RTF \objdata at offset 0x8E8B	1723 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.