Analysis
- max time kernel
148s - max time network
133s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
12/07/2026, 00:13
General
- Target client.exe
- Size 348KB
- Sample260712-ah84ksdv51
- SHA256 308c4dfa19d1c4a47c9fbe46bb174b97e6deb192e78de2db02a7e09734d65279
Malware Config
Extracted
-
quasar
-
1.3.0.0
-
Office04
-
91.208.197.30:1604
-
QSR_MUTEX_xmbGfyxLtSIqa6Gi7C
-
encryption_key
KkzhPngvsB6WscpPPWbv
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
windows
-
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 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\client.exe"C:\Users\Admin\AppData\Local\Temp\client.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "windows" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\client.exe" /rl HIGHEST /f2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\client.exeC:\Users\Admin\AppData\Local\Temp\client.exe1⤵
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
memory/4340-6-0x0000000006310000-0x0000000006322000-memory.dmp
memory/4340-12-0x0000000074702000-0x0000000074703000-memory.dmp
memory/4340-2-0x0000000005B50000-0x000000000610A000-memory.dmp
memory/4340-3-0x0000000005490000-0x0000000005522000-memory.dmp
memory/4340-4-0x00000000746F0000-0x0000000074EAC000-memory.dmp
memory/4340-5-0x0000000005590000-0x00000000055F6000-memory.dmp
memory/4340-13-0x00000000746F0000-0x0000000074EAC000-memory.dmp
memory/4340-0-0x0000000074702000-0x0000000074703000-memory.dmp
memory/4340-1-0x0000000000900000-0x000000000095E000-memory.dmp
memory/4340-7-0x0000000006840000-0x000000000687C000-memory.dmp
memory/4340-10-0x0000000006FA0000-0x0000000006FAA000-memory.dmp
memory/5564-11-0x00000000746F0000-0x0000000074EAC000-memory.dmp
memory/5564-9-0x00000000746F0000-0x0000000074EAC000-memory.dmp
memory/5564-8-0x00000000746F0000-0x0000000074EAC000-memory.dmp