RTF malware analysis — malicious · d5a6b19ed0cb225a

MALICIOUS

RTF

493.2 KB First seen: 2024-07-16

MD5: d4114e19370fc67f7ba24d46bc6f53d2 SHA-1: dd71a38ee9936da3c085e48719518f089192fa62 SHA-256: d5a6b19ed0cb225a61c510bff2f2713b3a69435527f41fbb83d4e8343effaa13

100 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter

The RTF file contains embedded OLE objects and uses an ".objupdate" directive, which forces OLE activation. The document body includes a lure instructing the user to 'click Enable editing from the yellow bar above' to bypass security settings. This strongly suggests the file is designed to exploit embedded objects to execute malicious code.

Heuristics 4

\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
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
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_off000464a3.bin` `3b4148363352aafdd95e6a4feff51fbfd8f71b67c5ec928f15b68db4142023ac`	rtf-objdata-decoded	RTF \objdata at offset 0x464A3	1436 bytes

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