Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20251231-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 7 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
Loading Replay Monitor...
Downloads
nvsvc.exe
memory/4172-0-0x00000295C3130000-0x00000295C3224000-memory.dmp
memory/4172-1-0x00000295DD830000-0x00000295DD840000-memory.dmp
memory/4172-2-0x00000295C3770000-0x00000295C37A4000-memory.dmp
memory/4356-20-0x000001F767630000-0x000001F76763A000-memory.dmp
memory/4356-37-0x000001F767A40000-0x000001F767A8A000-memory.dmp
memory/4356-12-0x000001F7676A0000-0x000001F7676DC000-memory.dmp
memory/4356-13-0x000001F7676E0000-0x000001F767718000-memory.dmp
memory/4356-14-0x000001F767620000-0x000001F76762A000-memory.dmp
memory/4356-15-0x000001F767660000-0x000001F767686000-memory.dmp
memory/4356-16-0x000001F767690000-0x000001F767698000-memory.dmp
memory/4356-17-0x000001F767720000-0x000001F767782000-memory.dmp
memory/4356-18-0x000001F7677B0000-0x000001F7677F2000-memory.dmp
memory/4356-19-0x000001F74DBF0000-0x000001F74DBFA000-memory.dmp
memory/4356-8-0x000001F74DBE0000-0x000001F74DBF0000-memory.dmp
memory/4356-21-0x000001F767A20000-0x000001F767A3A000-memory.dmp
memory/4356-22-0x000001F767A90000-0x000001F767AB2000-memory.dmp
memory/4356-11-0x000001F767640000-0x000001F767652000-memory.dmp
memory/4356-38-0x000001F767AC0000-0x000001F767B0C000-memory.dmp
memory/4356-39-0x000001F767B10000-0x000001F767B90000-memory.dmp
memory/4356-41-0x000001F7677A0000-0x000001F7677B4000-memory.dmp
memory/4356-49-0x000001F767C80000-0x000001F767C94000-memory.dmp
memory/4356-48-0x000001F767C70000-0x000001F767C80000-memory.dmp
memory/4356-47-0x000001F767C40000-0x000001F767C72000-memory.dmp
memory/4356-46-0x000001F767C10000-0x000001F767C44000-memory.dmp
memory/4356-45-0x000001F767C00000-0x000001F767C16000-memory.dmp
memory/4356-44-0x000001F767A10000-0x000001F767A1C000-memory.dmp
memory/4356-43-0x000001F767A00000-0x000001F767A0A000-memory.dmp
memory/4356-42-0x000001F767BC0000-0x000001F767BFA000-memory.dmp
memory/4356-40-0x000001F767B90000-0x000001F767BBA000-memory.dmp
memory/4356-50-0x000001F74DBE0000-0x000001F74DBF0000-memory.dmp