Analysis Overview
SHA256
19a7fd629bf8badfd4703785c8af9fbb3396689a47d2375274c1fae6629ee24b
Threat Level: Known bad
The file ia.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Executes dropped EXE
Drops file in System32 directory
Unsigned PE
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-03 10:06
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
2024-08-03 10:06
Reported
2024-08-03 10:08
Platform
win7-20240708-en
Max time kernel
149s
Max time network
135s
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:\Windows\system32\ia\Client.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\ia | C:\Windows\system32\ia\Client.exe | N/A |
| File created | C:\Windows\system32\ia\Client.exe | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia\Client.exe | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia\Client.exe | C:\Windows\system32\ia\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\ia.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\ia\Client.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ia.exe
"C:\Users\Admin\AppData\Local\Temp\ia.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "ia" /sc ONLOGON /tr "C:\Windows\system32\ia\Client.exe" /rl HIGHEST /f
C:\Windows\system32\ia\Client.exe
"C:\Windows\system32\ia\Client.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "ia" /sc ONLOGON /tr "C:\Windows\system32\ia\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp |
Files
memory/552-0-0x000007FEF5EE3000-0x000007FEF5EE4000-memory.dmp
memory/552-1-0x0000000000DC0000-0x00000000010E4000-memory.dmp
memory/552-2-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp
C:\Windows\System32\ia\Client.exe
| MD5 | 5828b4f3710d309100812b3f698a34c2 |
| SHA1 | 64c5979a98bc2855bdc440d9fc669d5f63cfaa9f |
| SHA256 | 19a7fd629bf8badfd4703785c8af9fbb3396689a47d2375274c1fae6629ee24b |
| SHA512 | 2888bd591344bf43cb03edc7c70e8a6a9200c17f97df0ea3bb0883a5b0aa62b4464d736e659f7b23a4303b3376e36c302882ff85054982649be9a1ccbca50127 |
memory/552-8-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp
memory/1112-9-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp
memory/1112-10-0x00000000011C0000-0x00000000014E4000-memory.dmp
memory/1112-11-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp
memory/1112-12-0x000007FEF5EE0000-0x000007FEF68CC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-03 10:06
Reported
2024-08-03 10:08
Platform
win10v2004-20240802-en
Max time kernel
149s
Max time network
152s
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:\Windows\system32\ia\Client.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\ia\Client.exe | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia\Client.exe | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia | C:\Users\Admin\AppData\Local\Temp\ia.exe | N/A |
| File opened for modification | C:\Windows\system32\ia\Client.exe | C:\Windows\system32\ia\Client.exe | N/A |
| File opened for modification | C:\Windows\system32\ia | C:\Windows\system32\ia\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\ia.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\ia\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3424 wrote to memory of 2140 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3424 wrote to memory of 2140 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3424 wrote to memory of 1644 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\system32\ia\Client.exe |
| PID 3424 wrote to memory of 1644 | N/A | C:\Users\Admin\AppData\Local\Temp\ia.exe | C:\Windows\system32\ia\Client.exe |
| PID 1644 wrote to memory of 4020 | N/A | C:\Windows\system32\ia\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1644 wrote to memory of 4020 | N/A | C:\Windows\system32\ia\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\ia.exe
"C:\Users\Admin\AppData\Local\Temp\ia.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "ia" /sc ONLOGON /tr "C:\Windows\system32\ia\Client.exe" /rl HIGHEST /f
C:\Windows\system32\ia\Client.exe
"C:\Windows\system32\ia\Client.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "ia" /sc ONLOGON /tr "C:\Windows\system32\ia\Client.exe" /rl HIGHEST /f
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 | g.bing.com | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 92.12.20.2.in-addr.arpa | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 73.144.22.2.in-addr.arpa | udp |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp | |
| N/A | 192.168.1.184:4782 | tcp |
Files
memory/3424-0-0x00007FF90F253000-0x00007FF90F255000-memory.dmp
memory/3424-1-0x0000000000FD0000-0x00000000012F4000-memory.dmp
memory/3424-2-0x00007FF90F250000-0x00007FF90FD11000-memory.dmp
C:\Windows\System32\ia\Client.exe
| MD5 | 5828b4f3710d309100812b3f698a34c2 |
| SHA1 | 64c5979a98bc2855bdc440d9fc669d5f63cfaa9f |
| SHA256 | 19a7fd629bf8badfd4703785c8af9fbb3396689a47d2375274c1fae6629ee24b |
| SHA512 | 2888bd591344bf43cb03edc7c70e8a6a9200c17f97df0ea3bb0883a5b0aa62b4464d736e659f7b23a4303b3376e36c302882ff85054982649be9a1ccbca50127 |
memory/3424-10-0x00007FF90F250000-0x00007FF90FD11000-memory.dmp
memory/1644-9-0x00007FF90F250000-0x00007FF90FD11000-memory.dmp
memory/1644-11-0x00007FF90F250000-0x00007FF90FD11000-memory.dmp
memory/1644-12-0x000000001BCB0000-0x000000001BD00000-memory.dmp
memory/1644-13-0x000000001C580000-0x000000001C632000-memory.dmp
memory/1644-14-0x00007FF90F250000-0x00007FF90FD11000-memory.dmp