Analysis Overview
SHA256
6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae
Threat Level: Known bad
The file celery installer.exe was found to be: Known bad.
Malicious Activity Summary
Quasar payload
Quasar RAT
Quasar family
Executes dropped EXE
Drops file in System32 directory
Unsigned PE
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-04 16:44
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
2024-08-04 16:44
Reported
2024-08-04 16:45
Platform
win7-20240708-en
Max time kernel
44s
Max time network
47s
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\SubDir\celery.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| 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 |
| File created | C:\Windows\system32\SubDir\celery.exe | C:\Users\Admin\AppData\Local\Temp\celery installer.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
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 | 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 |
| 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/2348-0-0x000007FEF56C3000-0x000007FEF56C4000-memory.dmp
memory/2348-1-0x0000000000A20000-0x0000000000D44000-memory.dmp
memory/2348-2-0x000007FEF56C0000-0x000007FEF60AC000-memory.dmp
C:\Windows\System32\SubDir\celery.exe
| MD5 | 45f959942912fbcd1653b538332c5ec9 |
| SHA1 | 7fdcd65b7bd7d5bdbc279e0b4fa6eebb8c36fca1 |
| SHA256 | 6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae |
| SHA512 | 9072548e7a5e8f92a910c8621ff1a67fba6dcc4aa3c7af82047bdfdb86165d6d3466ed32081ef87816ccc04b6549367ec65fa2d69e8865ef0d42b6befe26f466 |
memory/1824-8-0x0000000000D80000-0x00000000010A4000-memory.dmp
memory/2348-10-0x000007FEF56C0000-0x000007FEF60AC000-memory.dmp
memory/1824-11-0x000007FEF56C0000-0x000007FEF60AC000-memory.dmp
memory/1824-9-0x000007FEF56C0000-0x000007FEF60AC000-memory.dmp
memory/1824-12-0x000007FEF56C0000-0x000007FEF60AC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-04 16:44
Reported
2024-08-04 16:45
Platform
win10v2004-20240802-en
Max time kernel
52s
Max time network
54s
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 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 |
| 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 |
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 3548 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3548 wrote to memory of 1492 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3548 wrote to memory of 4500 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\system32\SubDir\celery.exe |
| PID 3548 wrote to memory of 4500 | N/A | C:\Users\Admin\AppData\Local\Temp\celery installer.exe | C:\Windows\system32\SubDir\celery.exe |
| PID 4500 wrote to memory of 216 | N/A | C:\Windows\system32\SubDir\celery.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 4500 wrote to memory of 216 | 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 | g.bing.com | udp |
| US | 13.107.21.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | Joesnazzy-26854.portmap.host | udp |
| DE | 193.161.193.99:26854 | Joesnazzy-26854.portmap.host | tcp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.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 |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 39.58.20.217.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 |
Files
memory/3548-0-0x00007FFA3B983000-0x00007FFA3B985000-memory.dmp
memory/3548-1-0x0000000000680000-0x00000000009A4000-memory.dmp
memory/3548-2-0x00007FFA3B980000-0x00007FFA3C441000-memory.dmp
C:\Windows\System32\SubDir\celery.exe
| MD5 | 45f959942912fbcd1653b538332c5ec9 |
| SHA1 | 7fdcd65b7bd7d5bdbc279e0b4fa6eebb8c36fca1 |
| SHA256 | 6b400e1fc91d48c849aa79f355b641d35658188d668686ad7192333e9b92a1ae |
| SHA512 | 9072548e7a5e8f92a910c8621ff1a67fba6dcc4aa3c7af82047bdfdb86165d6d3466ed32081ef87816ccc04b6549367ec65fa2d69e8865ef0d42b6befe26f466 |
memory/4500-10-0x00007FFA3B980000-0x00007FFA3C441000-memory.dmp
memory/3548-9-0x00007FFA3B980000-0x00007FFA3C441000-memory.dmp
memory/4500-11-0x00007FFA3B980000-0x00007FFA3C441000-memory.dmp
memory/4500-12-0x000000001BA90000-0x000000001BAE0000-memory.dmp
memory/4500-13-0x000000001C3E0000-0x000000001C492000-memory.dmp
memory/4500-14-0x00007FFA3B980000-0x00007FFA3C441000-memory.dmp