Analysis Overview
SHA256
b70c5aea64d75fc98a82b3c88cfecc6c2856f2a4987f4c1212c3fcf866ec9c9f
Threat Level: Known bad
The file Fps unlocker.exe was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar payload
Quasar family
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-04 00:31
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
2024-11-04 00:31
Reported
2024-11-04 00:35
Platform
win10ltsc2021-20241023-en
Max time kernel
145s
Max time network
149s
Command Line
Signatures
Quasar RAT
Quasar family
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:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Enumerates physical storage devices
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 behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Fps unlocker.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2544 wrote to memory of 3604 | N/A | C:\Users\Admin\AppData\Local\Temp\Fps unlocker.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2544 wrote to memory of 3604 | N/A | C:\Users\Admin\AppData\Local\Temp\Fps unlocker.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2544 wrote to memory of 4036 | N/A | C:\Users\Admin\AppData\Local\Temp\Fps unlocker.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 2544 wrote to memory of 4036 | N/A | C:\Users\Admin\AppData\Local\Temp\Fps unlocker.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 4036 wrote to memory of 1008 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4036 wrote to memory of 1008 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Fps unlocker.exe
"C:\Users\Admin\AppData\Local\Temp\Fps unlocker.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | Inversin-43597.portmap.host | udp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| US | 8.8.8.8:53 | ipwho.is | udp |
| DE | 195.201.57.90:443 | ipwho.is | tcp |
| US | 8.8.8.8:53 | 99.193.161.193.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.209.201.84.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 154.239.44.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | fd.api.iris.microsoft.com | udp |
| NL | 20.103.156.88:443 | fd.api.iris.microsoft.com | tcp |
| US | 8.8.8.8:53 | 56.163.245.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 160.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.144.22.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
Files
memory/2544-0-0x00007FFB52CA3000-0x00007FFB52CA5000-memory.dmp
memory/2544-1-0x0000000000010000-0x0000000000334000-memory.dmp
memory/2544-2-0x00007FFB52CA0000-0x00007FFB53762000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | bf656c2e5e1e942c41fa918132faa7ab |
| SHA1 | 1c2ddd815378e54db9e21dd2e61d89067c94da4f |
| SHA256 | b70c5aea64d75fc98a82b3c88cfecc6c2856f2a4987f4c1212c3fcf866ec9c9f |
| SHA512 | 54bef34ab722d69f1d3b7f5316f1fbc10fc629bb134f70eecb6a368330b7b73305ef5fa0b9e83c104e6e679ccd1d6e7f5a20caf4f39e6b03d4940b4ed9540b7d |
memory/2544-5-0x00007FFB52CA0000-0x00007FFB53762000-memory.dmp
memory/4036-6-0x00007FFB52CA0000-0x00007FFB53762000-memory.dmp
memory/4036-7-0x00007FFB52CA0000-0x00007FFB53762000-memory.dmp
memory/4036-8-0x000000001D0F0000-0x000000001D140000-memory.dmp
memory/4036-9-0x000000001D200000-0x000000001D2B2000-memory.dmp
memory/4036-12-0x000000001D140000-0x000000001D152000-memory.dmp
memory/4036-13-0x000000001D1A0000-0x000000001D1DC000-memory.dmp
memory/4036-14-0x00007FFB52CA0000-0x00007FFB53762000-memory.dmp