Analysis Overview
SHA256
23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6
Threat Level: Known bad
The file ControlLock.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar RAT
Quasar family
Executes dropped EXE
Drops file in System32 directory
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Scheduled Task/Job: Scheduled Task
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-30 02:27
Signatures
Quasar family
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-30 02:27
Reported
2024-06-30 02:29
Platform
win7-20240419-en
Max time kernel
149s
Max time network
153s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ControlLock.exe
"C:\Users\Admin\AppData\Local\Temp\ControlLock.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f
C:\Windows\system32\Windows\WindowsDefender.exe
"C:\Windows\system32\Windows\WindowsDefender.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp |
Files
memory/1028-0-0x000007FEF6063000-0x000007FEF6064000-memory.dmp
memory/1028-1-0x0000000001230000-0x0000000001554000-memory.dmp
memory/1028-2-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp
C:\Windows\System32\Windows\WindowsDefender.exe
| MD5 | 15666ecca39a4cd909eb57e66d3401c6 |
| SHA1 | 3442a7c4c5a482f1b5ba12f43da299310a323ffb |
| SHA256 | 23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6 |
| SHA512 | 49001f1f25cb8ce9a402a2b71c9ae46f795a798a9d7161dce7fc64aa470570503bd9ca3b8975c53ec76f190f5d54e360beb97b4cac35c038a400fc49ba04f213 |
memory/2612-10-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp
memory/2612-9-0x0000000000EC0000-0x00000000011E4000-memory.dmp
memory/1028-8-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp
memory/2612-11-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp
memory/2612-12-0x000007FEF6060000-0x000007FEF6A4C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-30 02:27
Reported
2024-06-30 02:34
Platform
win10v2004-20240508-en
Max time kernel
427s
Max time network
444s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
| File opened for modification | C:\Windows\system32\Windows | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3300 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3300 wrote to memory of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3300 wrote to memory of 4460 | N/A | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | C:\Windows\system32\Windows\WindowsDefender.exe |
| PID 3300 wrote to memory of 4460 | N/A | C:\Users\Admin\AppData\Local\Temp\ControlLock.exe | C:\Windows\system32\Windows\WindowsDefender.exe |
| PID 4460 wrote to memory of 2600 | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4460 wrote to memory of 2600 | N/A | C:\Windows\system32\Windows\WindowsDefender.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ControlLock.exe
"C:\Users\Admin\AppData\Local\Temp\ControlLock.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f
C:\Windows\system32\Windows\WindowsDefender.exe
"C:\Windows\system32\Windows\WindowsDefender.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows Defender" /sc ONLOGON /tr "C:\Windows\system32\Windows\WindowsDefender.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp | |
| US | 73.66.246.196:4782 | tcp |
Files
memory/3300-0-0x00007FFE899C3000-0x00007FFE899C5000-memory.dmp
memory/3300-1-0x0000000000450000-0x0000000000774000-memory.dmp
memory/3300-2-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp
C:\Windows\System32\Windows\WindowsDefender.exe
| MD5 | 15666ecca39a4cd909eb57e66d3401c6 |
| SHA1 | 3442a7c4c5a482f1b5ba12f43da299310a323ffb |
| SHA256 | 23b2736b81a4c1e470f4b03ce681656c43e109e73acccbcc6279589fb1b695a6 |
| SHA512 | 49001f1f25cb8ce9a402a2b71c9ae46f795a798a9d7161dce7fc64aa470570503bd9ca3b8975c53ec76f190f5d54e360beb97b4cac35c038a400fc49ba04f213 |
memory/3300-9-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp
memory/4460-10-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp
memory/4460-11-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp
memory/4460-12-0x000000001D740000-0x000000001D790000-memory.dmp
memory/4460-13-0x000000001D850000-0x000000001D902000-memory.dmp
memory/4460-14-0x00007FFE899C0000-0x00007FFE8A481000-memory.dmp