RTF malware analysis — malicious · 6be9c322b4d691b4

MALICIOUS

RTF

25.1 KB First seen: 2023-05-26

MD5: e3b452029e1713145f0d95258fc64b3c SHA-1: 2128f449172b10a8fec045855d2829669f56fe30 SHA-256: 6be9c322b4d691b46920bcdff155fe48e785d04a72bbe6c00956f6d8e455b531

120 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The RTF file contains an embedded OLE object that leverages the Equation Editor vulnerability (RTF_EQUATION_EDITOR). The ".objupdate" directive indicates that the embedded object is designed to be activated automatically, triggering code execution. This is a common technique for delivering secondary payloads, and the presence of the exploit suggests a downloader or dropper functionality.

Heuristics 3

Equation Editor CLSID critical RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
\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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000010e0.bin` `4361ac4dcf214d5516679cef48e78960e2ecc180d7f4b7066d733b6b838482b9`	rtf-objdata-decoded	RTF \objdata at offset 0x10E0	4177 bytes

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