Analysis
- max time kernel
149s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
14/11/2026, 14:08
General
- Target Client-built.exe
- Size 3.1MB
- Sample261114-rf2eds1s8j
- SHA256 5413060f067fa0a05251bc8216c12b7e891ed59bcef9dfb6633b5bf46dd9f5ec
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
m.85truvabet.com:4783
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m.85truvabet.com:4444
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m.85truvabet.com:8888
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m.85truvabet.com:8080
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m.85truvabet.com:443
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m.85truvabet.com:43
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4833781f-ab77-4c9e-af36-793930f77164
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encryption_key
61D61573755A2E8791F777F44FE72A8C404B3F90
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
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reconnect_delay
50
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- 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 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\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
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-
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Client.exe
memory/3756-8-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-10-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-3-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-4-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-5-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-6-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-2-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-7-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-9-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-28-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-11-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-12-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-13-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-14-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/3756-1-0x00000000007E0000-0x0000000000B04000-memory.dmp
memory/3756-0-0x00007FF94FF7F000-0x00007FF94FF80000-memory.dmp
memory/5852-20-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-22-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-23-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-24-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-25-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-26-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-21-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-29-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-27-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-30-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-31-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-32-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-33-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp
memory/5852-35-0x000000001C8C0000-0x000000001C910000-memory.dmp
memory/5852-36-0x000000001C9D0000-0x000000001CA82000-memory.dmp
memory/5852-37-0x00007FF94FDF0000-0x00007FF950794000-memory.dmp