Applied Cybernetics Group
T1048.003 — Exfiltration Over Unencrypted Non-C2 Protocol
- Technique
T1048.003- Tactics
- Exfiltration
- MISP citations
- 0
- KEV CVEs mapped
- 1
- Community rules
- 9
- thrunt rules
- 0
- Upstream
- https://attack.mitre.org/techniques/T1048/003
MITRE description
Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel. The data may also be sent to an alternate network location from the main command and control server.(Citation: copy_cmd_cisco) Adversaries may opt to obfuscate this data, without the use of encryption, within network protocols that are natively unencrypted (such as HTTP, FTP, or DNS). This may include custom or publicly available encoding/compression algorithms (such as base64) as well as embedding data within protocol headers and fields.
KEV CVEs mapped to this technique
Per MITRE CTID's hand-curated KEV→ATT&CK mappings — these are the actively-exploited vulnerabilities behind this technique's KEV signal.
Detection coverage
SigmaHQ community rules
- Potential Data Exfiltration Over SMTP Via Send-MailMessage Cmdlet (threat-hunting)
- Data Exfiltration with Wget (core)
- Python WebServer Execution - Linux (core)
- Suspicious DNS Query with B64 Encoded String (core)
- WebDav Put Request (core)
- Suspicious Outbound SMTP Connections (core)
- PowerShell ICMP Exfiltration (core)
- WebDav Client Execution Via Rundll32.EXE (core)
- Suspicious WebDav Client Execution Via Rundll32.EXE (core)