Analysis
- max time kernel
146s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
04/04/2024, 14:55
General
- Target Client-built.exe
- Size 3.3MB
- Sample240404-sasezaaf7s
- SHA256 ee744afa00674c978780c9a27da3245d646037b9fa8b76828a021b750cc92058
Malware Config
Extracted
-
quasar
-
1.4.1
-
randoms
-
192.168.50.97:4782
-
d1132518-98da-4fb2-9846-de05b9c45c57
-
encryption_key
CB8080F6DCDDE3CF3D0207D31F2E0D22CCB3D9ED
-
install_name
Injection.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Windows.exe
-
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-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Windows.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Injection.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Injection.exe"C:\Users\Admin\AppData\Roaming\SubDir\Injection.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Windows.exe" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Injection.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Injection.exe
memory/964-10-0x00007FF802E70000-0x00007FF803931000-memory.dmp
memory/964-11-0x000000001B830000-0x000000001B840000-memory.dmp
memory/964-12-0x000000001C350000-0x000000001C3A0000-memory.dmp
memory/964-13-0x000000001C460000-0x000000001C512000-memory.dmp
memory/964-14-0x00007FF802E70000-0x00007FF803931000-memory.dmp
memory/964-15-0x000000001B830000-0x000000001B840000-memory.dmp
memory/2936-0-0x0000000000920000-0x0000000000C6C000-memory.dmp
memory/2936-1-0x00007FF802E70000-0x00007FF803931000-memory.dmp
memory/2936-2-0x000000001BA90000-0x000000001BAA0000-memory.dmp
memory/2936-9-0x00007FF802E70000-0x00007FF803931000-memory.dmp