Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
16/09/2026, 05:17
General
- Target ccz.us.exe
- Size 3.1MB
- Sample260916-fyvtsatvas
- SHA256 4e361b12c9ec9f8c43c997ec906a4ce6e34058828d7251e978b360ba322d92f4
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
ccz.us.com:443
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www.ccz.us.com:443
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ccz.us.com:80
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www.ccz.us.com:80
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554e9af3-0f67-49ec-8c6d-8871f679b463
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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 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
-
C:\Users\Admin\AppData\Local\Temp\ccz.us.exe"C:\Users\Admin\AppData\Local\Temp\ccz.us.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
-
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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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
Loading Replay Monitor...
Downloads
Client.exe
memory/4764-16-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-2-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-3-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-4-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-5-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-6-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-7-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-8-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-10-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-11-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-9-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-12-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-13-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-14-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/4764-1-0x00000000002F0000-0x0000000000614000-memory.dmp
memory/4764-0-0x00007FFB7A3DF000-0x00007FFB7A3E0000-memory.dmp
memory/5676-19-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-26-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-20-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-21-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-18-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-22-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-23-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-24-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-25-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-17-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-27-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-28-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-29-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-30-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-32-0x000000001D090000-0x000000001D0E0000-memory.dmp
memory/5676-33-0x000000001D1A0000-0x000000001D252000-memory.dmp
memory/5676-34-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp
memory/5676-35-0x00007FFB7A250000-0x00007FFB7ABF4000-memory.dmp