Analysis
- max time kernel
5s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
08/08/2026, 09:41
General
- Target Client.exe
- Size 3.1MB
- Sample260808-ln62ysthjb
- SHA256 37a5e077700dde890193472f365609eda499d6c734d55d38368853f91025b8f6
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
kqbd.mobi:443
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www.kqbd.mobi:443
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kqbd.mobi:80
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www.kqbd.mobi:80
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b66843b7-bf9f-4d59-a580-d4f2d852f09f
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encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
-
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 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 2 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.exe"C:\Users\Admin\AppData\Local\Temp\Client.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
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
-
-
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
-
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
-
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/264-28-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-27-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-26-0x000000001D210000-0x000000001D2C2000-memory.dmp
memory/264-25-0x000000001D100000-0x000000001D150000-memory.dmp
memory/264-17-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-20-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-22-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-23-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-21-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-19-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/264-16-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-7-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-9-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-13-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-12-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-11-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-18-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-10-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-14-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-8-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-0-0x00007FFCD4EDF000-0x00007FFCD4EE0000-memory.dmp
memory/3376-6-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-5-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-4-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-3-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-2-0x00007FFCD4D50000-0x00007FFCD56F4000-memory.dmp
memory/3376-1-0x0000000000C40000-0x0000000000F64000-memory.dmp