Analysis Overview
SHA256
84a0907e7e112b593f99f0a7440eb3d74e71bf7dfe19d27c298a28042acf5e19
Threat Level: Known bad
The file Client-built.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-02 07:53
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
2024-08-02 07:53
Reported
2024-08-02 07:56
Platform
win10v2004-20240730-en
Max time kernel
150s
Max time network
158s
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\test.exe | N/A |
Enumerates physical storage devices
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\test.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\test.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\test.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\test.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4840 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\test.exe |
| PID 4840 wrote to memory of 2948 | N/A | C:\Users\Admin\AppData\Local\Temp\Client-built.exe | C:\Users\Admin\AppData\Roaming\SubDir\test.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\Client-built.exe
"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
C:\Users\Admin\AppData\Roaming\SubDir\test.exe
"C:\Users\Admin\AppData\Roaming\SubDir\test.exe"
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -p -s fdPHost
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 73.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 99.58.20.217.in-addr.arpa | udp |
| SK | 95.103.111.116:4782 | tcp | |
| SK | 95.103.111.116:4782 | tcp | |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| SK | 95.103.111.116:4782 | tcp | |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| SK | 95.103.111.116:4782 | tcp | |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| SK | 95.103.111.116:4782 | tcp | |
| N/A | 239.255.255.250:3702 | udp | |
| N/A | 239.255.255.250:3702 | udp | |
| US | 8.8.8.8:53 | c.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa | udp |
| SK | 95.103.111.116:4782 | tcp | |
| SK | 95.103.111.116:4782 | tcp |
Files
memory/4840-0-0x00007FF99B3D3000-0x00007FF99B3D5000-memory.dmp
memory/4840-1-0x0000000000970000-0x0000000000C94000-memory.dmp
memory/4840-2-0x00007FF99B3D0000-0x00007FF99BE91000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\test.exe
| MD5 | 89211e15b473db84cfd447e3dbb4fdcd |
| SHA1 | 1d861ff885aa2cd8dc11f01f1a0d202410349fa3 |
| SHA256 | 84a0907e7e112b593f99f0a7440eb3d74e71bf7dfe19d27c298a28042acf5e19 |
| SHA512 | 5fc2f8f646732efc65ab6d9cb94e9365d241f22fd30e586d8524bde3d7c37d700d32e0bae2faf762b75e98a3d799747f45cd724c2cadc36085645c7a97bcd671 |
memory/2948-8-0x00007FF99B3D0000-0x00007FF99BE91000-memory.dmp
memory/4840-9-0x00007FF99B3D0000-0x00007FF99BE91000-memory.dmp
memory/2948-10-0x00007FF99B3D0000-0x00007FF99BE91000-memory.dmp
memory/2948-11-0x000000001C780000-0x000000001C7D0000-memory.dmp
memory/2948-12-0x000000001C890000-0x000000001C942000-memory.dmp
memory/2948-13-0x00007FF99B3D0000-0x00007FF99BE91000-memory.dmp
memory/2948-14-0x000000001D3C0000-0x000000001D8E8000-memory.dmp