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Home/ATT&CK/Software/S0203
MITRE ATT&CK Malware

Hydraq (S0203)

RoarurMdmBotHomeUnixHomuxHidraQHydraQMcRatAurora9002 RAT
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[Hydraq](https://attack.mitre.org/software/S0203) is a data-theft trojan first used by [Elderwood](https://attack.mitre.org/groups/G0066) in the 2009 Google intrusion known as Operation Aurora, though variations of this trojan have been used in more recent campaigns by other Chinese actors, possibly including [APT17](https://attack.mitre.org/groups/G0025).(Citation: MicroFocus 9002 Aug 2016)(Citation: Symantec Elderwood Sept 2012)(Citation: Symantec Trojan.Hydraq Jan 2010)(Citation: ASERT Seven Pointed Dagger Aug 2015)(Citation: FireEye DeputyDog 9002 November 2013)(Citation: ProofPoint GoT 9002 Aug 2017)(Citation: FireEye Sunshop Campaign May 2013)(Citation: PaloAlto 3102 Sept 2015)

Platforms: Windows

▪Techniques implemented (19)

T1012Query RegistryT1129Shared ModulesT1569.002Service Execution

▪Used by groups (2)

G0066ElderwoodG0001Axiom
S0203 on MITRE ATT&CK →
T1016System Network Configuration Discovery
T1082System Information Discovery
T1005Data from Local System
T1112Modify Registry
T1105Ingress Tool Transfer
T1027Obfuscated Files or Information
T1543.003Windows Service
T1685.005Clear Windows Event Logs
T1573.001Symmetric Cryptography
T1007System Service Discovery
T1070.004File Deletion
T1057Process Discovery
T1113Screen Capture
T1048Exfiltration Over Alternative Protocol
T1083File and Directory Discovery
T1134Access Token Manipulation

MITRE ATT&CK® is a registered trademark of The MITRE Corporation. © 2026 The MITRE Corporation. This work is reproduced and distributed with the permission of The MITRE Corporation.