Analysis Overview
SHA256
b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62
Threat Level: Known bad
The file b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62 was found to be: Known bad.
Malicious Activity Summary
Quasar RAT
Quasar family
Quasar payload
Executes dropped EXE
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Scheduled Task/Job: Scheduled Task
Suspicious use of SetWindowsHookEx
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-31 23:29
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
2024-07-31 23:29
Reported
2024-07-31 23:31
Platform
win7-20240708-en
Max time kernel
149s
Max time network
150s
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:\Users\Admin\AppData\Roaming\SubDir\Client.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\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe | N/A |
| Token: SeDebugPrivilege | 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\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe
"C:\Users\Admin\AppData\Local\Temp\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "BootstrapperV1.11" /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 "BootstrapperV1.11" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp |
Files
memory/2928-0-0x000007FEF5B93000-0x000007FEF5B94000-memory.dmp
memory/2928-1-0x0000000001380000-0x00000000016A4000-memory.dmp
memory/2928-2-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 7c57eda4bef5b6a6f5ca084dde31deb7 |
| SHA1 | 8ed5f1f48691e8d3d5e910b1fd46d0ce0d30eb1e |
| SHA256 | b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62 |
| SHA512 | 22d5be1c470f673b7a89ccb972c9b907eb76a070246d071550d891d52d2e4eba2a14df6924b98e1d866ad216e02e3a7cc368f545a578dfe6eaffec461abefe5d |
memory/2724-7-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
memory/2928-9-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
memory/2724-8-0x00000000012A0000-0x00000000015C4000-memory.dmp
memory/2724-10-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
memory/2724-11-0x000007FEF5B90000-0x000007FEF657C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-07-31 23:29
Reported
2024-07-31 23:31
Platform
win10v2004-20240730-en
Max time kernel
150s
Max time network
141s
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:\Users\Admin\AppData\Roaming\SubDir\Client.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\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe | N/A |
| Token: SeDebugPrivilege | 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
| Description | Indicator | Process | Target |
| PID 1212 wrote to memory of 2308 | N/A | C:\Users\Admin\AppData\Local\Temp\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1212 wrote to memory of 2308 | N/A | C:\Users\Admin\AppData\Local\Temp\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1212 wrote to memory of 4224 | N/A | C:\Users\Admin\AppData\Local\Temp\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 1212 wrote to memory of 4224 | N/A | C:\Users\Admin\AppData\Local\Temp\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 4224 wrote to memory of 2372 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4224 wrote to memory of 2372 | 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\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe
"C:\Users\Admin\AppData\Local\Temp\b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "BootstrapperV1.11" /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 "BootstrapperV1.11" /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 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| N/A | 192.168.1.28:4782 | tcp | |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.99.105.20.in-addr.arpa | udp |
| N/A | 192.168.1.28:4782 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| N/A | 192.168.1.28:4782 | tcp | |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| N/A | 192.168.1.28:4782 | tcp | |
| US | 8.8.8.8:53 | 0.204.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.in-addr.arpa | udp |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp | |
| N/A | 192.168.1.28:4782 | tcp |
Files
memory/1212-1-0x0000000000C30000-0x0000000000F54000-memory.dmp
memory/1212-0-0x00007FFCE9D83000-0x00007FFCE9D85000-memory.dmp
memory/1212-2-0x00007FFCE9D80000-0x00007FFCEA841000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 7c57eda4bef5b6a6f5ca084dde31deb7 |
| SHA1 | 8ed5f1f48691e8d3d5e910b1fd46d0ce0d30eb1e |
| SHA256 | b8d24236cb542dd0358707623e485d1f8f5b917103f88e7de9d81356a8bd0a62 |
| SHA512 | 22d5be1c470f673b7a89ccb972c9b907eb76a070246d071550d891d52d2e4eba2a14df6924b98e1d866ad216e02e3a7cc368f545a578dfe6eaffec461abefe5d |
memory/1212-9-0x00007FFCE9D80000-0x00007FFCEA841000-memory.dmp
memory/4224-8-0x00007FFCE9D80000-0x00007FFCEA841000-memory.dmp
memory/4224-10-0x00007FFCE9D80000-0x00007FFCEA841000-memory.dmp
memory/4224-11-0x000000001C630000-0x000000001C680000-memory.dmp
memory/4224-12-0x000000001C740000-0x000000001C7F2000-memory.dmp
memory/4224-13-0x00007FFCE9D80000-0x00007FFCEA841000-memory.dmp