Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
14/03/2024, 03:11
General
- Target 150e54745313fd19c3f11a7a24e8a609.exe
- Size 3.1MB
- Sample240314-dplhmshc2s
- SHA256 5d2a6561c0a15244f3d7cf2c369e11395d040232ff6201e6847dcd5061a7599d
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
168.75.105.185:4782
-
58906a4e-9ac4-49e8-a4d5-6107b1975801
-
encryption_key
66EB66A197A4E6EC1332FEED8290CAC1A919B085
-
install_name
systems.exe
-
log_directory
Logs
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reconnect_delay
3000
-
startup_key
systems
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Drops file in System32 directory 5 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\150e54745313fd19c3f11a7a24e8a609.exe"C:\Users\Admin\AppData\Local\Temp\150e54745313fd19c3f11a7a24e8a609.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "systems" /sc ONLOGON /tr "C:\Windows\system32\SubDir\systems.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Windows\system32\SubDir\systems.exe"C:\Windows\system32\SubDir\systems.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "systems" /sc ONLOGON /tr "C:\Windows\system32\SubDir\systems.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
systems.exe
memory/1908-11-0x0000000002CC0000-0x0000000002CD0000-memory.dmp
memory/1908-9-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp
memory/1908-12-0x000000001BFC0000-0x000000001C010000-memory.dmp
memory/1908-13-0x000000001C0D0000-0x000000001C182000-memory.dmp
memory/1908-16-0x000000001C060000-0x000000001C072000-memory.dmp
memory/1908-17-0x000000001CBD0000-0x000000001CC0C000-memory.dmp
memory/1908-18-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp
memory/1908-19-0x0000000002CC0000-0x0000000002CD0000-memory.dmp
memory/2580-2-0x000000001BC70000-0x000000001BC80000-memory.dmp
memory/2580-1-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp
memory/2580-10-0x00007FFA5F780000-0x00007FFA60241000-memory.dmp
memory/2580-0-0x0000000000CC0000-0x0000000000FE4000-memory.dmp