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Home/ATT&CK/Software/S0229
MITRE ATT&CK Malware

Orz (S0229)

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[Orz](https://attack.mitre.org/software/S0229) is a custom JavaScript backdoor used by [Leviathan](https://attack.mitre.org/groups/G0065). It was observed being used in 2014 as well as in August 2017 when it was dropped by Microsoft Publisher files. (Citation: Proofpoint Leviathan Oct 2017) (Citation: FireEye Periscope March 2018)

Platforms: Windows

▪Techniques implemented (13)

T1083File and Directory DiscoveryT1059.003Windows Command ShellT1218.010Regsvr32T1102.002Bidirectional CommunicationT1057Process DiscoveryT1082System Information DiscoveryT1070Indicator RemovalT1518Software DiscoveryT1105Ingress Tool TransferT1112Modify RegistryT1016System Network Configuration DiscoveryT1055.012Process HollowingT1027Obfuscated Files or Information

▪Used by groups (1)

G0065Leviathan
S0229on MITRE ATT&CK →

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.