Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
30/10/2026, 08:24
General
- Target Client-built.exe
- Size 3.1MB
- Sample261030-ka8sysxvaz
- SHA256 39bfcab55f26b619e2c875e0e70698b39b5524f4d821368764cd9ec10a53b2f3
Malware Config
Extracted
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quasar
-
1.4.1
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Office04
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chillzone.radio.fm:40
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chillzone.radio.fm:41
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chillzone.radio.fm:443
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chillzone.radio.fm:43
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chillzone.radio.fm:80
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chillzone.radio.fm:8080
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chillzone.radio.fm:81
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5ffc83b0-afe9-4608-8142-8847f9ad403b
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encryption_key
61D61573755A2E8791F777F44FE72A8C404B3F90
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install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
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reconnect_delay
3000
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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 2 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
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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
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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
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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:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Client.exe
memory/3932-22-0x000000001B7D0000-0x000000001B820000-memory.dmp
memory/3932-23-0x000000001CA40000-0x000000001CAF2000-memory.dmp
memory/4516-13-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-24-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-20-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-19-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-18-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-17-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-15-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-16-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4516-14-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-6-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-12-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-10-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-9-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-8-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-7-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-0-0x00007FF97F35F000-0x00007FF97F360000-memory.dmp
memory/5096-5-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-4-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-3-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/5096-1-0x0000000000B80000-0x0000000000EA4000-memory.dmp
memory/5096-2-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp