Analysis Overview
SHA256
96a244b32e73bac08510839a1137c41941ff4b18b1171c9fde09d0603b2477a7
Threat Level: Known bad
The file Client.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Executes dropped EXE
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-08 09:58
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 09:58
Reported
2024-01-08 10:00
Platform
win7-20231129-en
Max time kernel
124s
Max time network
137s
Command Line
Signatures
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.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 |
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\ფოტოტესტ.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe" /rl HIGHEST /f
C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe
"C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.1.4:4782 | tcp | |
| N/A | 192.168.1.4:4782 | tcp | |
| N/A | 192.168.1.4:4782 | tcp | |
| N/A | 192.168.1.4:4782 | tcp | |
| N/A | 192.168.1.4:4782 | tcp | |
| N/A | 192.168.1.4:4782 | tcp |
Files
memory/2940-0-0x00000000008F0000-0x0000000000C14000-memory.dmp
memory/2940-1-0x000007FEF63C0000-0x000007FEF6DAC000-memory.dmp
memory/2940-2-0x000000001B3E0000-0x000000001B460000-memory.dmp
memory/2732-10-0x000000001B2C0000-0x000000001B340000-memory.dmp
memory/2732-9-0x000007FEF63C0000-0x000007FEF6DAC000-memory.dmp
memory/2732-8-0x00000000000D0000-0x00000000003F4000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe
| MD5 | c8abd26559861b903b53868a9e09ab3b |
| SHA1 | ffb5f63654ccd69cfcfe2d2db5de776ce760e37d |
| SHA256 | f0d08899d003bc9a68b18a867943006cf0ab7cdbe30a0eb43d7956313d369c8c |
| SHA512 | 3ffa12f56a2be47152495d47d99eecffa81d41ca6a410e3b3b0999fc69e436f2839eff09ba592c2e606ef4d19f0ee27a4e1c2db2232d8105fbef93ce2d765bd5 |
memory/2940-11-0x000007FEF63C0000-0x000007FEF6DAC000-memory.dmp
memory/2732-12-0x000007FEF63C0000-0x000007FEF6DAC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-08 09:58
Reported
2024-01-08 10:01
Platform
win10v2004-20231215-en
Max time kernel
151s
Max time network
176s
Command Line
Signatures
Quasar RAT
Quasar payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| 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.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3304 wrote to memory of 3136 | N/A | C:\Users\Admin\AppData\Local\Temp\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3304 wrote to memory of 3136 | N/A | C:\Users\Admin\AppData\Local\Temp\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:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\ფოტოტესტ.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | 2.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 195.233.44.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 183.59.114.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 137.71.91.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 16.234.44.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 4.181.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.194.73.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.173.189.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
Files
memory/3304-0-0x0000000000E00000-0x0000000001124000-memory.dmp
memory/3304-1-0x00007FF8C22F0000-0x00007FF8C2DB1000-memory.dmp
memory/3304-2-0x000000001BFA0000-0x000000001BFB0000-memory.dmp
memory/3304-3-0x00007FF8C22F0000-0x00007FF8C2DB1000-memory.dmp
memory/3304-5-0x000000001BFA0000-0x000000001BFB0000-memory.dmp