Analysis Overview
SHA256
e2ba71624ae6ac3f80fbb474079bda5827244925eff77919760367d1622607ff
Threat Level: Known bad
The file Pearjumper.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar payload
Quasar RAT
Executes dropped EXE
Unsigned PE
Scheduled Task/Job: Scheduled Task
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-02 14:17
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
2024-11-02 14:17
Reported
2024-11-02 14:18
Platform
win7-20241010-en
Max time kernel
32s
Max time network
36s
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 |
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\Pearjumper.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SetWindowsHookEx
| 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\Pearjumper.exe
"C:\Users\Admin\AppData\Local\Temp\Pearjumper.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /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 "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| N/A | 192.168.4.26:4782 | tcp | |
| N/A | 192.168.4.26:4782 | tcp |
Files
memory/2024-0-0x000007FEF5833000-0x000007FEF5834000-memory.dmp
memory/2024-1-0x0000000000150000-0x0000000000474000-memory.dmp
memory/2024-2-0x000007FEF5830000-0x000007FEF621C000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 5dd91af5b6d1e8f38ccf83f6cf24e93d |
| SHA1 | 978d27dfe11619fbd71333d63741da0b3a21b7d2 |
| SHA256 | e2ba71624ae6ac3f80fbb474079bda5827244925eff77919760367d1622607ff |
| SHA512 | 6b6e61f8419e234eeb233eeb0f402434f5905492831588a3a488caf02ca9a60bc21a4b94acf7982d3dc533afe801341220a51d1fb33bc14dcc1cca1c44f8c03b |
memory/2884-9-0x00000000012C0000-0x00000000015E4000-memory.dmp
memory/2024-8-0x000007FEF5830000-0x000007FEF621C000-memory.dmp
memory/2884-10-0x000007FEF5830000-0x000007FEF621C000-memory.dmp
memory/2884-11-0x000007FEF5830000-0x000007FEF621C000-memory.dmp
memory/2884-12-0x000007FEF5830000-0x000007FEF621C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-02 14:17
Reported
2024-11-02 14:18
Platform
win10v2004-20241007-en
Max time kernel
36s
Max time network
43s
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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\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\Pearjumper.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2904 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\Pearjumper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2904 wrote to memory of 2892 | N/A | C:\Users\Admin\AppData\Local\Temp\Pearjumper.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 2904 wrote to memory of 208 | N/A | C:\Users\Admin\AppData\Local\Temp\Pearjumper.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 2904 wrote to memory of 208 | N/A | C:\Users\Admin\AppData\Local\Temp\Pearjumper.exe | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe |
| PID 208 wrote to memory of 2008 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 208 wrote to memory of 2008 | N/A | C:\Users\Admin\AppData\Roaming\SubDir\Client.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\Pearjumper.exe
"C:\Users\Admin\AppData\Local\Temp\Pearjumper.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Quasar Client Startup" /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 "Quasar Client Startup" /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 | 58.55.71.13.in-addr.arpa | udp |
| N/A | 192.168.4.26:4782 | tcp | |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 150.171.27.10:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| N/A | 192.168.4.26:4782 | tcp | |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
Files
memory/2904-0-0x00007FFB52293000-0x00007FFB52295000-memory.dmp
memory/2904-1-0x0000000000960000-0x0000000000C84000-memory.dmp
memory/2904-2-0x00007FFB52290000-0x00007FFB52D51000-memory.dmp
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
| MD5 | 5dd91af5b6d1e8f38ccf83f6cf24e93d |
| SHA1 | 978d27dfe11619fbd71333d63741da0b3a21b7d2 |
| SHA256 | e2ba71624ae6ac3f80fbb474079bda5827244925eff77919760367d1622607ff |
| SHA512 | 6b6e61f8419e234eeb233eeb0f402434f5905492831588a3a488caf02ca9a60bc21a4b94acf7982d3dc533afe801341220a51d1fb33bc14dcc1cca1c44f8c03b |
memory/208-10-0x00007FFB52290000-0x00007FFB52D51000-memory.dmp
memory/2904-9-0x00007FFB52290000-0x00007FFB52D51000-memory.dmp
memory/208-11-0x00007FFB52290000-0x00007FFB52D51000-memory.dmp
memory/208-12-0x000000001B2D0000-0x000000001B320000-memory.dmp
memory/208-13-0x000000001BB10000-0x000000001BBC2000-memory.dmp
memory/208-14-0x00007FFB52290000-0x00007FFB52D51000-memory.dmp