Analysis Overview
SHA256
b474b5897b9d187e03a1eec0cde75b65d3d92566c05c0fec4beed484ceb7915a
Threat Level: Known bad
The file Client.exe was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar family
Quasar payload
Executes dropped EXE
Unsigned PE
Creates scheduled task(s)
Uses Task Scheduler COM API
Runs ping.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-08 09:47
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
2024-01-08 09:47
Reported
2024-01-08 09:49
Platform
win7-20231215-en
Command Line
Signatures
Processes
Network
Files
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-08 09:47
Reported
2024-01-08 09:49
Platform
win10v2004-20231222-en
Max time kernel
2s
Max time network
65s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| 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 |
Creates scheduled task(s)
| 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 |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\SYSTEM32\schtasks.exe | N/A |
Runs ping.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
| N/A | N/A | C:\Windows\system32\PING.EXE | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 5016 wrote to memory of 1012 | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 5016 wrote to memory of 1012 | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 5016 wrote to memory of 3916 | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 5016 wrote to memory of 3916 | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 3916 wrote to memory of 3884 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3916 wrote to memory of 3884 | 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\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\g0zabTVoF1mG.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\ooNvgYlGvZZ3.bat" "
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\hFS5OwoIn6Cy.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\H3L7HH83vTDG.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\yy5oOuvh7LwE.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\54HALPxa1aMS.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\viGTfqdpyGPZ.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\XKI8f97RQmLs.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\nVI6iDY6JS5U.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\msbdrlgNBCuo.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\QDd9k9a46kWf.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7Eeiu698HcXB.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\vJ5I44Jl0JmB.bat" "
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
C:\Windows\system32\PING.EXE
ping -n 10 localhost
C:\Windows\system32\chcp.com
chcp 65001
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\PVilWKj8caYZ.bat" "
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 210.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| IE | 20.54.110.119:443 | tcp | |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 20.3.187.198:443 | tcp | |
| US | 8.8.8.8:53 | 144.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 174.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.134.221.88.in-addr.arpa | udp |
Files
memory/5016-0-0x0000000000B50000-0x0000000000E74000-memory.dmp
memory/5016-1-0x00007FF9D7B80000-0x00007FF9D8641000-memory.dmp
memory/5016-2-0x0000000002DE0000-0x0000000002DF0000-memory.dmp
memory/5016-10-0x00007FF9D7B80000-0x00007FF9D8641000-memory.dmp
memory/3916-11-0x000000001B930000-0x000000001B940000-memory.dmp
memory/3916-9-0x00007FF9D7B80000-0x00007FF9D8641000-memory.dmp
memory/3916-12-0x000000001B870000-0x000000001B8C0000-memory.dmp
memory/3916-13-0x000000001C1F0000-0x000000001C2A2000-memory.dmp
memory/3916-19-0x00007FF9D7B80000-0x00007FF9D8641000-memory.dmp
memory/2072-21-0x00007FF9D7340000-0x00007FF9D7E01000-memory.dmp
memory/2072-22-0x0000000000E00000-0x0000000000E10000-memory.dmp
memory/2072-27-0x00007FF9D7340000-0x00007FF9D7E01000-memory.dmp
memory/3576-29-0x00007FF9D7160000-0x00007FF9D7C21000-memory.dmp
memory/3576-30-0x000000001B140000-0x000000001B150000-memory.dmp
memory/3576-35-0x00007FF9D7160000-0x00007FF9D7C21000-memory.dmp
memory/4844-37-0x00007FF9D7160000-0x00007FF9D7C21000-memory.dmp
memory/4844-38-0x0000000002910000-0x0000000002920000-memory.dmp
memory/4844-43-0x00007FF9D7160000-0x00007FF9D7C21000-memory.dmp
memory/2828-45-0x00007FF9D7020000-0x00007FF9D7AE1000-memory.dmp
memory/2828-46-0x000000001B760000-0x000000001B770000-memory.dmp
memory/2828-51-0x00007FF9D7020000-0x00007FF9D7AE1000-memory.dmp
memory/2368-53-0x00007FF9D6B20000-0x00007FF9D75E1000-memory.dmp
memory/2368-54-0x0000000002EC0000-0x0000000002ED0000-memory.dmp
memory/2368-59-0x00007FF9D6B20000-0x00007FF9D75E1000-memory.dmp
memory/4876-62-0x000000001B380000-0x000000001B390000-memory.dmp
memory/4876-61-0x00007FF9D6B20000-0x00007FF9D75E1000-memory.dmp
memory/4876-67-0x00007FF9D6B20000-0x00007FF9D75E1000-memory.dmp
memory/3496-70-0x000000001B400000-0x000000001B410000-memory.dmp
memory/3496-69-0x00007FF9D6550000-0x00007FF9D7011000-memory.dmp
memory/3496-75-0x00007FF9D6550000-0x00007FF9D7011000-memory.dmp
memory/1488-78-0x0000000002EA0000-0x0000000002EB0000-memory.dmp
memory/1488-77-0x00007FF9D6BE0000-0x00007FF9D76A1000-memory.dmp
memory/1488-83-0x00007FF9D6BE0000-0x00007FF9D76A1000-memory.dmp
memory/1944-85-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp
memory/1944-86-0x000000001B300000-0x000000001B310000-memory.dmp
memory/1944-91-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp
memory/516-94-0x000000001B7D0000-0x000000001B7E0000-memory.dmp
memory/516-93-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp
memory/516-99-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp
memory/1072-101-0x00007FF9D6BE0000-0x00007FF9D76A1000-memory.dmp
memory/1072-102-0x00000000029B0000-0x00000000029C0000-memory.dmp
memory/1072-107-0x00007FF9D6BE0000-0x00007FF9D76A1000-memory.dmp
memory/4464-109-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp
memory/4464-110-0x000000001BDF0000-0x000000001BE00000-memory.dmp
memory/4464-114-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp
memory/2076-117-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp
memory/2076-118-0x000000001BC60000-0x000000001BC70000-memory.dmp
memory/2076-123-0x00007FF9D6C90000-0x00007FF9D7751000-memory.dmp