Orz

Orz is a custom JavaScript backdoor used by Leviathan. It was observed being used in 2014 as well as in August 2017 when it was dropped by Microsoft Publisher files. [1] [2]

ID: S0229
Associated Software: AIRBREAK
Type: MALWARE
Platforms: Windows
Version: 2.1
Created: 18 April 2018
Last Modified: 30 March 2020

Associated Software Descriptions

Name Description
AIRBREAK [2]

Techniques Used

Domain ID Name Use
Enterprise T1059 .003 Command and Scripting Interpreter: Windows Command Shell

Orz can execute shell commands.[1] Orz can execute commands with JavaScript.[1]

Enterprise T1083 File and Directory Discovery

Orz can gather victim drive information.[1]

Enterprise T1070 Indicator Removal on Host

Orz can overwrite Registry settings to reduce its visibility on the victim.[1]

Enterprise T1105 Ingress Tool Transfer

Orz can download files onto the victim.[1]

Enterprise T1027 Obfuscated Files or Information

Some Orz strings are base64 encoded, such as the embedded DLL known as MockDll.[1]

Enterprise T1057 Process Discovery

Orz can gather a process list from the victim.[1]

Enterprise T1055 .012 Process Injection: Process Hollowing

Some Orz versions have an embedded DLL known as MockDll that uses process hollowing and Regsvr32 to execute another payload.[1]

Enterprise T1218 .010 Signed Binary Proxy Execution: Regsvr32

Some Orz versions have an embedded DLL known as MockDll that uses Process Hollowing and regsvr32 to execute another payload.[1]

Enterprise T1518 Software Discovery

Orz can gather the victim's Internet Explorer version.[1]

Enterprise T1082 System Information Discovery

Orz can gather the victim OS version and whether it is 64 or 32 bit.[1]

Enterprise T1016 System Network Configuration Discovery

Orz can gather victim proxy information.[1]

Enterprise T1102 .002 Web Service: Bidirectional Communication

Orz has used Technet and Pastebin web pages for command and control.[1]

Groups That Use This Software

ID Name References
G0065 Leviathan

[1]

References