ATT&CKReferencesLumen_SystemBC_Sept2025

Lumen_SystemBC_Sept2025

Black Lotus Labs . (2025, September 18). SystemBC: Bringing the noise. Retrieved December 15, 2025.

Open the source

Techniques0

Not cited by any technique.

Groups0

None recorded.

Software1

Campaigns0

None recorded.

Procedure examples2

TechniqueUsed byProcedure example
T1001
Data Obfuscation
MalwareSystemBC

SystemBC has encoded with XOR and encrypted with RC4 its beacon.

T1140
Deobfuscate/Decode Files or Information
MalwareSystemBC

SystemBC has the ability to decrypt RC4 encrypted packets and to decode obfuscated data before C2 communication. Additionally, SystemBC has decrypted its config file that was encoded with XOR and a hardcoded 40-byte key.

Data from MITRE ATT&CK® (Enterprise). ATT&CK® is a registered trademark of The MITRE Corporation.