Analysis
- max time kernel
150s - max time network
126s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
26/08/2026, 11:37
General
- Target 8814843156c38bc50027a0c9b7f3fa849f80c0c8fd9f737cba1ccafcda22ad7b.exe
- Size 459KB
- Sample260826-nrd7fsyamd
- SHA256 8814843156c38bc50027a0c9b7f3fa849f80c0c8fd9f737cba1ccafcda22ad7b
Malware Config
Extracted
-
quasar
-
1.7.1
-
Office04
-
127.0.0.1:8443
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5f296532-b857-4cc3-b032-3d06f79cb2bb
-
encryption_key
5EE9240E1DB06E47E58F3C5EDE5123870EE33E1D
-
install_name
Client.exe
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key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
s0nnmyjlG7Vq/9zbI3blmNYp58PFyb20pZ3/15IUyf4qrMQVgoCvmx/5B6O5FziWz4LuLJ0MRAJtpxniL2Gll+allrp7nagvn+iaX/7UN8LLalepEpX5VAtXOEfZLAclslKcW3VbfsoYqbABJTd3LwncAWXyLk47N6tpi1+nAQTHyPT0NJOj440SK1Ii8aPjdI8g7tAyWMUh7wIsonY4yC3JWjY2uUNok+m+S/90Tqwm0TpEugOvgDP8n0tWlspDqiGRo4A9/xl1YwQS1i0qRMc5Kfs9I1AQWM9GrDUdChaV39/vznxKlVYsQmviO0XZposSyKKYsICDC/pAYVPbmG2z81qLz6St+DG0cYaiafN4GQ4GEQmZptchZeijomP7tqrZkiaoK700D1JsX6wd/YRehXDmSGMkLMkl1pTK/Lp+6i1ey1/4Y7qrB42svOYaoaX8cxXcB8uLTfG/2qNV7JC1/Pca7YuJ2fuC8fuNYva9sxztk1ORfzGVALKIR8wQ7IcZIzva5xNf8qiTV5rnT9+5sqLZTDcn5ReLsFD71XcxprYx4UsTxbw9urvwS8e08Iwkz4BqFaCwuirxdz8AgVKCBh0dy8/Z9GC7yBJluwYhkFT3jEZhG5o1H6EV5XWhyiyYeBzqxD7VYI09T7UO4pT8rCuoaK5kR/skhZjFSek=
-
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
- ConfuserEx .NET packer 1 IoCs
Detects ConfuserEx .NET packer.
- Drops file in System32 directory 3 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\8814843156c38bc50027a0c9b7f3fa849f80c0c8fd9f737cba1ccafcda22ad7b.exe"C:\Users\Admin\AppData\Local\Temp\8814843156c38bc50027a0c9b7f3fa849f80c0c8fd9f737cba1ccafcda22ad7b.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\system32\SubDir\Client.exe"C:\Windows\system32\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:\Windows\system32\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Windows\system32\SubDir\Client.exeC:\Windows\system32\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
connection.log
memory/1780-8-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-9-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-4-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-5-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-6-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-7-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-23-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-3-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-10-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-11-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-12-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-13-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-14-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-2-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/1780-0-0x00007FFE9EF2F000-0x00007FFE9EF30000-memory.dmp
memory/1780-1-0x0000000000C10000-0x0000000000C88000-memory.dmp
memory/3384-16-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-19-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-20-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-21-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-18-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-22-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-24-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-25-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-26-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-27-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-28-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-29-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-30-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-35-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp
memory/3384-17-0x00007FFE9EDA0000-0x00007FFE9F744000-memory.dmp