Analysis
- max time kernel
137s - max time network
141s - platform
windows11-21h2_x64 - resource
win11-20250619-en - resource tags
- submitted
20/08/2025, 17:56
General
- Target 268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a.exe
- Size 348KB
- Sample250820-wjcbwsvxbt
- SHA256 268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
jul5050quasa.duckdns.org:5050
-
jul5050quasab.duckdns.org:5050
-
jul5050quasac.duckdns.org:5050
-
jul5050quasad.duckdns.org:5050
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jul5050quasae.duckdns.org:5050
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jul5050quasaf.duckdns.org:5050
-
QSR_MUTEX_HAw6LhtQ1vnPbRMEnz
-
encryption_key
EQ989DgkPSn9nR6JdT1p
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a.exe"C:\Users\Admin\AppData\Local\Temp\268501cbc4704142a83673aab0b20dc7b8bf9221b70f0e7bbb42f072ed341e7a.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/1368-0-0x00000000008F0000-0x000000000094E000-memory.dmp
memory/1368-1-0x0000000005900000-0x0000000005EA6000-memory.dmp
memory/1368-2-0x0000000005420000-0x00000000054B2000-memory.dmp
memory/1368-3-0x0000000005540000-0x0000000005550000-memory.dmp
memory/1368-4-0x00000000054C0000-0x0000000005526000-memory.dmp
memory/1368-5-0x0000000006130000-0x0000000006142000-memory.dmp
memory/1368-6-0x0000000006660000-0x000000000669C000-memory.dmp
memory/1368-8-0x00000000069F0000-0x00000000069FA000-memory.dmp