Analysis
- max time kernel
148s - max time network
133s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
27/10/2026, 14:35
General
- Target bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6.exe
- Size 348KB
- Sample261027-rx47lsdy3z
- SHA256 bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
85.121.5.9:1604
-
QSR_MUTEX_XzZ2Z3u9qZDMKak6tj
-
encryption_key
zaz5X5BP9QxO4guERqLE
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Looks up external IP address via web service 1 TTPs 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs
The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.
- 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\bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6.exe"C:\Users\Admin\AppData\Local\Temp\bd29b8106ffdde93f23674752ecbbc143b5b92ea7c6f85a2cebc033dbe9eabe6.exe"1⤵
- Reads the TCP/IP host and domain name from the registry
- 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/2988-0-0x00000000748F2000-0x00000000748F3000-memory.dmp
memory/2988-1-0x00000000009D0000-0x0000000000A2E000-memory.dmp
memory/2988-2-0x0000000005A90000-0x000000000604A000-memory.dmp
memory/2988-3-0x00000000054D0000-0x0000000005562000-memory.dmp
memory/2988-4-0x00000000748E0000-0x000000007509C000-memory.dmp
memory/2988-5-0x0000000005440000-0x00000000054A6000-memory.dmp
memory/2988-6-0x00000000062B0000-0x00000000062C2000-memory.dmp
memory/2988-7-0x0000000006920000-0x000000000695C000-memory.dmp
memory/2988-9-0x0000000006C80000-0x0000000006C8A000-memory.dmp
memory/2988-10-0x00000000748F2000-0x00000000748F3000-memory.dmp
memory/2988-11-0x00000000748E0000-0x000000007509C000-memory.dmp