Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20251231-en - resource tags
- submitted
07/01/2026, 03:50
General
- Target file.exe
- Size 953KB
- Sample260107-ed3s8ayqcs
- SHA256 45432b761551b009c47718d02acb1d4cbd2a71b2d655bcdd6e794fe05c792db8
Malware Config
Extracted
-
quasar
-
encryption_key
954700A9AAF0AA2384D4F95ECFC6C069E16F7534
-
key_salt
5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382
-
reconnect_delay
3000
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "nvsvc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\nvsvc\nvsvc.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\nvsvc\nvsvc.exe"C:\Users\Admin\AppData\Roaming\nvsvc\nvsvc.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "nvsvc" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\nvsvc\nvsvc.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
-
C:\Users\Admin\AppData\Roaming\nvsvc\nvsvc.exeC:\Users\Admin\AppData\Roaming\nvsvc\nvsvc.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
nvsvc.exe
memory/2340-20-0x0000028F73FA0000-0x0000028F73FAA000-memory.dmp
memory/2340-47-0x0000028F744C0000-0x0000028F744F2000-memory.dmp
memory/2340-50-0x0000028F731E0000-0x0000028F731F0000-memory.dmp
memory/2340-8-0x0000028F731E0000-0x0000028F731F0000-memory.dmp
memory/2340-12-0x0000028F73F20000-0x0000028F73F5C000-memory.dmp
memory/2340-11-0x0000028F73C60000-0x0000028F73C72000-memory.dmp
memory/2340-13-0x0000028F73F60000-0x0000028F73F98000-memory.dmp
memory/2340-14-0x0000028F73C40000-0x0000028F73C4A000-memory.dmp
memory/2340-15-0x0000028F73C80000-0x0000028F73CA6000-memory.dmp
memory/2340-16-0x0000028F73CB0000-0x0000028F73CB8000-memory.dmp
memory/2340-17-0x0000028F73FB0000-0x0000028F74012000-memory.dmp
memory/2340-18-0x0000028F74040000-0x0000028F74082000-memory.dmp
memory/2340-19-0x0000028F73C50000-0x0000028F73C5A000-memory.dmp
memory/2340-39-0x0000028F74390000-0x0000028F74410000-memory.dmp
memory/2340-40-0x0000028F74410000-0x0000028F7443A000-memory.dmp
memory/2340-21-0x0000028F742A0000-0x0000028F742BA000-memory.dmp
memory/2340-45-0x0000028F74480000-0x0000028F74496000-memory.dmp
memory/2340-38-0x0000028F74340000-0x0000028F7438C000-memory.dmp
memory/2340-49-0x0000028F74500000-0x0000028F74514000-memory.dmp
memory/2340-48-0x0000028F744F0000-0x0000028F74500000-memory.dmp
memory/2340-22-0x0000028F74310000-0x0000028F74332000-memory.dmp
memory/2340-46-0x0000028F74490000-0x0000028F744C4000-memory.dmp
memory/2340-37-0x0000028F742C0000-0x0000028F7430A000-memory.dmp
memory/2340-44-0x0000028F74290000-0x0000028F7429C000-memory.dmp
memory/2340-43-0x0000028F74280000-0x0000028F7428A000-memory.dmp
memory/2340-42-0x0000028F74440000-0x0000028F7447A000-memory.dmp
memory/2340-41-0x0000028F74010000-0x0000028F74024000-memory.dmp
memory/3868-2-0x0000012E7F4A0000-0x0000012E7F4D4000-memory.dmp
memory/3868-0-0x0000012E7D6A0000-0x0000012E7D794000-memory.dmp
memory/3868-1-0x0000012E7FD90000-0x0000012E7FDA0000-memory.dmp