RTF malware analysis — malicious · 52980202492da6cc

MALICIOUS

RTF

14.2 KB First seen: 2023-02-24

MD5: 344a7f146e2f45929baac822fe64d389 SHA-1: 128752c6fbb236a17269e15a7c270f83d52679f0 SHA-256: 52980202492da6cc78eed398df0639727e47728e3dae827291436b6315852cdb

120 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains OLE object data and specifically triggers heuristics for Equation Editor exploitation and OLE object activation. This indicates the file is designed to exploit a vulnerability, likely CVE-2017-11882, to achieve code execution. The embedded OLE object data is the primary mechanism for this exploit, and the file's malicious verdict confirms its intent to compromise the system.

Heuristics 3

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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00001801.bin` `1db476c42340680fc2543793b4af4a2ab814d1788de73c0065095f229f25d8d8`	rtf-objdata-decoded	RTF \objdata at offset 0x1801	1825 bytes

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