PULSECHECK - S1108 (9a097d18-d15f-4635-a4f1-189df7efdc40)

PULSECHECK is a web shell written in Perl that was used by APT5 as early as 2020 including against Pulse Secure VPNs at US Defense Industrial Base (DIB) companies.(Citation: Mandiant Pulse Secure Zero-Day April 2021)

Cluster A	Galaxy A	Cluster B	Galaxy B	Level
Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c)	Attack Pattern	PULSECHECK - S1108 (9a097d18-d15f-4635-a4f1-189df7efdc40)	Malware	1
Web Shell - T1505.003 (5d0d3609-d06d-49e1-b9c9-b544e0c618cb)	Attack Pattern	PULSECHECK - S1108 (9a097d18-d15f-4635-a4f1-189df7efdc40)	Malware	1
PULSECHECK - S1108 (9a097d18-d15f-4635-a4f1-189df7efdc40)	Malware	Unix Shell - T1059.004 (a9d4b653-6915-42af-98b2-5758c4ceee56)	Attack Pattern	1
PULSECHECK - S1108 (9a097d18-d15f-4635-a4f1-189df7efdc40)	Malware	Web Protocols - T1071.001 (df8b2a25-8bdf-4856-953c-a04372b1c161)	Attack Pattern	1
Standard Encoding - T1132.001 (04fd5427-79c7-44ea-ae13-11b24778ff1c)	Attack Pattern	Data Encoding - T1132 (cc7b8c4e-9be0-47ca-b0bb-83915ec3ee2f)	Attack Pattern	2
Web Shell - T1505.003 (5d0d3609-d06d-49e1-b9c9-b544e0c618cb)	Attack Pattern	Server Software Component - T1505 (d456de47-a16f-4e46-8980-e67478a12dcb)	Attack Pattern	2
Unix Shell - T1059.004 (a9d4b653-6915-42af-98b2-5758c4ceee56)	Attack Pattern	Command and Scripting Interpreter - T1059 (7385dfaf-6886-4229-9ecd-6fd678040830)	Attack Pattern	2
Application Layer Protocol - T1071 (355be19c-ffc9-46d5-8d50-d6a036c675b6)	Attack Pattern	Web Protocols - T1071.001 (df8b2a25-8bdf-4856-953c-a04372b1c161)	Attack Pattern	2