Analysis Overview
SHA256
36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291
Threat Level: Known bad
The file 36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Enumerates physical storage devices
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of AdjustPrivilegeToken
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
Suspicious use of FindShellTrayWindow
Scheduled Task/Job: Scheduled Task
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-03 02:33
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-03 02:33
Reported
2024-11-03 02:35
Platform
win7-20240903-en
Max time kernel
150s
Max time network
154s
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 |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.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\Client-built.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 |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.exe
"C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.exe"
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "puttystart" /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 "puttystart" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp | |
| PL | 83.168.110.87:4782 | tcp |
Files
memory/1680-0-0x0000000074E9E000-0x0000000074E9F000-memory.dmp
memory/1680-1-0x0000000001150000-0x00000000014A0000-memory.dmp
memory/1680-2-0x0000000074E90000-0x000000007557E000-memory.dmp
\Users\Admin\AppData\Local\Temp\Client-built.exe
| MD5 | e456f2449b504e6af29acb9c1e0ebd25 |
| SHA1 | 4680b936eca2d5a88cbeed164b54a0b12f138892 |
| SHA256 | 7ce80a4a4932516cf8163f73c85537e621b0a1e1a0c0fda41da1f71b1867dfc6 |
| SHA512 | ffe8788bae2143eb5b68f57edb3ded569bc1e75390bc48a7eb92e65a95688d34229039001d80f717f1c14e650fe94c01ec6e9438dac045af17569dc6811ab281 |
memory/1680-9-0x0000000074E90000-0x000000007557E000-memory.dmp
memory/2472-10-0x000007FEF6033000-0x000007FEF6034000-memory.dmp
memory/2472-11-0x0000000000A20000-0x0000000000D44000-memory.dmp
memory/2472-12-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp
memory/2688-19-0x0000000000DE0000-0x0000000001104000-memory.dmp
memory/2472-18-0x000007FEF6030000-0x000007FEF6A1C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-03 02:33
Reported
2024-11-03 02:35
Platform
win10v2004-20241007-en
Max time kernel
141s
Max time network
138s
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 |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.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\Client-built.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 |
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 |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.exe
"C:\Users\Admin\AppData\Local\Temp\36c5e613a6f16466cfbea6b74f926cb9d357bf78e1e229d9f47f38e7b78a7291.exe"
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "puttystart" /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 "puttystart" /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 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 74.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| PL | 83.168.110.87:4782 | 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 | 87.110.168.83.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.57.201.195.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.163.202.172.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 92.12.20.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
Files
memory/1840-0-0x0000000074CDE000-0x0000000074CDF000-memory.dmp
memory/1840-1-0x0000000000040000-0x0000000000390000-memory.dmp
memory/1840-2-0x0000000074CD0000-0x0000000075480000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
| MD5 | e456f2449b504e6af29acb9c1e0ebd25 |
| SHA1 | 4680b936eca2d5a88cbeed164b54a0b12f138892 |
| SHA256 | 7ce80a4a4932516cf8163f73c85537e621b0a1e1a0c0fda41da1f71b1867dfc6 |
| SHA512 | ffe8788bae2143eb5b68f57edb3ded569bc1e75390bc48a7eb92e65a95688d34229039001d80f717f1c14e650fe94c01ec6e9438dac045af17569dc6811ab281 |
memory/788-15-0x00007FF974783000-0x00007FF974785000-memory.dmp
memory/1840-16-0x0000000074CD0000-0x0000000075480000-memory.dmp
memory/788-17-0x00000000003C0000-0x00000000006E4000-memory.dmp
memory/788-18-0x00007FF974780000-0x00007FF975241000-memory.dmp
memory/788-25-0x00007FF974780000-0x00007FF975241000-memory.dmp
memory/2860-26-0x000000001C260000-0x000000001C2B0000-memory.dmp
memory/2860-27-0x000000001C370000-0x000000001C422000-memory.dmp
memory/2860-30-0x000000001C2F0000-0x000000001C302000-memory.dmp
memory/2860-31-0x000000001CE70000-0x000000001CEAC000-memory.dmp