General
- Target Client-built.exe
- Size 3.1MB
- Sample260720-22be7sgw2n
- SHA256 f4244db1561aa3426777514a2cdcb7b16dff9b0f5986ebc6699c8e3dfdc1dc2b
- MD5 94ee72c61a68fb391517ad581dfb2076
- SHA1 15ea248c96c34996fe35542f9905d73ff6b3a1cc
- SHA512 d7f6b037d7f88c81885b3f1ed68bd91324f12cc6ea395bec89b0c1aa3b8930005ce413be20e4d6cb288ee6c5b032eb59a0cb1412be386a38aa4ffae73801a62d
- SSDEEP 49152:CvRhBYjCO4Dt2d5aKCuVPzlEmVQL0wvwkawwb/4BxA6oGd+153THHB72eh2NT:CvZt2d5aKCuVPzlEmVQ0wvwfT/GO
- TLSH T1B2E56B0437F85E33E56BD2B3D5B05022A3F1F82AF363EB1B519167BA1C53B5488426A7
- MD5 SHA1 SHA512 SSDEEP TLSH
Behavioral task
behavioral1
Sample
Client-built.exe
Resource
win11ltsc2024-20260709-en
19 signatures
900 seconds
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
EclipseX
C2
-
192.168.1.133:4785
Mutex
-
8ff75d12-2a62-4daf-91dd-95f798377530
Attributes
-
encryption_key
68BC53829FF8EB1B6A16183484DC84F6265112BE
-
install_name
Microsoft_SQL_Server.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Microsoft_keyboard
-
reconnect_delay
2984
-
startup_key
Microsoft startup
-
subdirectory
Microsoft
Targets
-
- Target Client-built.exe
- Size 3.1MB
- SHA256 f4244db1561aa3426777514a2cdcb7b16dff9b0f5986ebc6699c8e3dfdc1dc2b
- MD5 94ee72c61a68fb391517ad581dfb2076
- SHA1 15ea248c96c34996fe35542f9905d73ff6b3a1cc
- SHA512 d7f6b037d7f88c81885b3f1ed68bd91324f12cc6ea395bec89b0c1aa3b8930005ce413be20e4d6cb288ee6c5b032eb59a0cb1412be386a38aa4ffae73801a62d
- SSDEEP 49152:CvRhBYjCO4Dt2d5aKCuVPzlEmVQL0wvwkawwb/4BxA6oGd+153THHB72eh2NT:CvZt2d5aKCuVPzlEmVQ0wvwfT/GO
- TLSH T1B2E56B0437F85E33E56BD2B3D5B05022A3F1F82AF363EB1B519167BA1C53B5488426A7
- MD5 SHA1 SHA512 SSDEEP TLSH
-
Quasar payload
-
Boot or Logon Autostart Execution: Active Setup
Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.
-
Executes dropped EXE
-
Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
-
Drops file in System32 directory
MITRE ATT&CK Enterprise v16
Persistence
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Active Setup
1Scheduled Task/Job
1Scheduled Task
1