Detection rules › Sublime MQL
Attachment: WinRAR CVE-2025-8088 exploitation
Detects attempts to exploit CVE-2025-8088 via attached RAR files
Threat classification
Sublime's own taxonomy (not MITRE ATT&CK).
| Category | Values |
|---|---|
| Attack types | Malware/Ransomware |
| Tactics and techniques | Exploit, Evasion |
Event coverage
| Message attribute |
|---|
| attachments (collection) |
| type |
Rule body MQL
type.inbound
and any(attachments,
// its a rar file
(
.content_type == "application/x-rar-compressed"
or .file_extension == "rar"
or .file_type == "rar"
)
// less than 10 meg
and .size < 10000000
// explode it
and any(file.explode(.),
// contains a yara match
any(.scan.yara.matches, .name == "WinRAR_CVE_2025_8088")
)
)
Detection logic
Scope: inbound message.
Detects attempts to exploit CVE-2025-8088 via attached RAR files
- inbound message
any of
attachmentswhere all hold:any of:
- .content_type is 'application/x-rar-compressed'
- .file_extension is 'rar'
- .file_type is 'rar'
- .size < 10000000
any of
file.explode(.)where:any of
.scan.yara.matcheswhere:- .name is 'WinRAR_CVE_2025_8088'
Inspects: attachments[].content_type, attachments[].file_extension, attachments[].file_type, attachments[].size, type.inbound. Sensors: file.explode.
Indicators matched (4)
| Field | Match | Value |
|---|---|---|
attachments[].content_type | equals | application/x-rar-compressed |
attachments[].file_extension | equals | rar |
attachments[].file_type | equals | rar |
file.explode(attachments[])[].scan.yara.matches[].name | equals | WinRAR_CVE_2025_8088 |