Analysis Overview
SHA256
6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae
Threat Level: Known bad
The file celery installer.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
Scheduled Task/Job: Scheduled Task
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-07-28 20:29
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
2024-07-28 20:29
Reported
2024-07-28 20:34
Platform
win10v2004-20240709-en
Max time kernel
56s
Max time network
68s
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\SubDir\celery.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\system32\SubDir\celery.exe | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir\celery.exe | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir\celery.exe | C:\Windows\system32\SubDir\celery.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir | C:\Windows\system32\SubDir\celery.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\celery installer.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\SubDir\celery.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\SubDir\celery.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2276 wrote to memory of 3184 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2276 wrote to memory of 3184 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2276 wrote to memory of 4868 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\system32\SubDir\celery.exe |
| PID 2276 wrote to memory of 4868 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\system32\SubDir\celery.exe |
| PID 4868 wrote to memory of 4180 | N/A | C:\Windows\system32\SubDir\celery.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4868 wrote to memory of 4180 | N/A | C:\Windows\system32\SubDir\celery.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\celery installer.exe
"C:\Users\Admin\AppData\Local\Temp\celery installer.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "windows defender" /sc ONLOGON /tr "C:\Windows\system32\SubDir\celery.exe" /rl HIGHEST /f
C:\Windows\system32\SubDir\celery.exe
"C:\Windows\system32\SubDir\celery.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "windows defender" /sc ONLOGON /tr "C:\Windows\system32\SubDir\celery.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.143.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 68.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | Joesnazzy-26854.portmap.host | udp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 192.142.123.92.in-addr.arpa | udp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
Files
memory/2276-0-0x00007FF866BD3000-0x00007FF866BD5000-memory.dmp
memory/2276-1-0x0000000000030000-0x0000000000354000-memory.dmp
memory/2276-2-0x00007FF866BD0000-0x00007FF867691000-memory.dmp
C:\Windows\System32\SubDir\celery.exe
| MD5 | 45f959942912fbcd1653b538332c5ec9 |
| SHA1 | 7fdcd65b7bd7d5bdbc279e0b4fa6eebb8c36fca1 |
| SHA256 | 6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae |
| SHA512 | 9072548e7a5e8f92a910c8621ff1a67fba6dcc4aa3c7af82047bdfdb86165d6d3466ed32081ef87816ccc04b6549367ec65fa2d69e8865ef0d42b6befe26f466 |
memory/4868-9-0x00007FF866BD0000-0x00007FF867691000-memory.dmp
memory/2276-10-0x00007FF866BD0000-0x00007FF867691000-memory.dmp
memory/4868-11-0x00007FF866BD0000-0x00007FF867691000-memory.dmp
memory/4868-12-0x000000001BA10000-0x000000001BA60000-memory.dmp
memory/4868-13-0x000000001C460000-0x000000001C512000-memory.dmp
memory/4868-14-0x00007FF866BD0000-0x00007FF867691000-memory.dmp