Analysis Overview
SHA256
48d4fde21b28f0614fdf124f83f5594bddc13292f21b775da58b017385a49b01
Threat Level: Known bad
The file Client-built.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar family
Quasar RAT
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Scheduled Task/Job: Scheduled Task
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-03 19:03
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
2024-11-03 19:03
Reported
2024-11-03 19:06
Platform
win7-20241010-en
Max time kernel
143s
Max time network
149s
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\Roaming\SubDir\Client.exe | N/A |
Enumerates physical storage devices
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 WriteProcessMemory
Uses Task Scheduler COM API
Processes
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 "java updater" /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 "java updater" /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 | Inversin-43597.portmap.host | udp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
| DE | 193.161.193.99:43597 | Inversin-43597.portmap.host | tcp |
Files
memory/388-0-0x000007FEF51C3000-0x000007FEF51C4000-memory.dmp
memory/388-1-0x0000000000D30000-0x0000000001054000-memory.dmp
memory/388-2-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | f5b93af3ee1b64dacd2bac9ba4af9b27 |
| SHA1 | 1f2a038199a71a2b917dca4dff2f5fac5e840978 |
| SHA256 | 48d4fde21b28f0614fdf124f83f5594bddc13292f21b775da58b017385a49b01 |
| SHA512 | 83703b0f567723abe3d6b34bd419be5df3475e049ae8893993fec017da9a420cd875184c570bdffbfc0bccac662762991885dea8ebcc2af172b3aac2fb00a302 |
memory/1660-10-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp
memory/388-9-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp
memory/1660-8-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp
memory/1660-7-0x0000000000CF0000-0x0000000001014000-memory.dmp
memory/1660-11-0x000007FEF51C0000-0x000007FEF5BAC000-memory.dmp