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S9014malware

PHASEJAM

PHASEJAM is a dropper written as a bash shell script that modifies Ivanti Connect Secure appliance components. PHASEJAM was first reported in January 2025. PHASEJAM has previously been leveraged by People's Republic of China (PRC)- affiliated actors identified as UNC5221 and SYLVANITE.

Platforms: Linux, Network Devices

MITRE ATT&CK ↗

Linked entities · 15

usesT1554Compromise Host Software Binary usesT1489Service Stop usesT1140Deobfuscate/Decode Files or Infor…usesT1036.003Rename Legitimate Utilities usesT1027.010Command Obfuscation usesT1678Delay Execution usesT1565Data Manipulation usesT1027.013Encrypted/Encoded File usesT1105Ingress Tool Transfer usesT1505.003Web Shell usesT1685.003Modify or Spoof Tool UI usesT1685Disable or Modify Tools usesT1546.004Unix Shell Configuration Modifica…usesT1059.008Network Device CLI usesT1041Exfiltration Over C2 Channel