Analysis
- max time kernel
143s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
15/01/2024, 02:26
General
- Target Client.exe
- Size 3.1MB
- Sample240115-cwvt8affbj
- SHA256 768f3d3ab3cf8e3766320c4b21bf5d5b22c184eda22c2910a11ba225854b69f2
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
192.168.1.4:4782
-
fb60f788-23ad-4fe9-94ab-639b4ab81e3b
-
encryption_key
312C9735F1261D6EFAADF08B4DF3CC68E59E47DF
-
install_name
ფოტოტესტ.exe
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Creates scheduled task(s) 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 SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 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
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
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C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe"C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- 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\ფოტოტესტ.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
ფოტოტესტ.exe
memory/780-0-0x0000000000330000-0x0000000000654000-memory.dmp
memory/780-1-0x00007FFA22360000-0x00007FFA22E21000-memory.dmp
memory/780-2-0x000000001B440000-0x000000001B450000-memory.dmp
memory/780-9-0x00007FFA22360000-0x00007FFA22E21000-memory.dmp
memory/2196-10-0x00007FFA22360000-0x00007FFA22E21000-memory.dmp
memory/2196-11-0x000000001BA20000-0x000000001BA30000-memory.dmp
memory/2196-12-0x000000001B9A0000-0x000000001B9F0000-memory.dmp
memory/2196-13-0x000000001C5E0000-0x000000001C692000-memory.dmp
memory/2196-14-0x00007FFA22360000-0x00007FFA22E21000-memory.dmp
memory/2196-15-0x000000001BA20000-0x000000001BA30000-memory.dmp