Analysis Overview
SHA256
fcece45f00b710bd5cb01a2a79781c871f1bd36fac18e00e85bd6452ecd5eadd
Threat Level: Known bad
The file PepperX.exe was found to be: Known bad.
Malicious Activity Summary
Quasar family
Quasar RAT
Quasar payload
Executes dropped EXE
Drops file in System32 directory
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-19 19:55
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
2024-08-19 19:55
Reported
2024-08-19 19:57
Platform
win7-20240704-en
Max time kernel
125s
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\SubDir\PepperX.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\SubDir\PepperX.exe | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir\PepperX.exe | C:\Windows\system32\SubDir\PepperX.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir | C:\Windows\system32\SubDir\PepperX.exe | N/A |
| File created | C:\Windows\system32\SubDir\PepperX.exe | C:\Users\Admin\AppData\Local\Temp\PepperX.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\PepperX.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\SubDir\PepperX.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\SubDir\PepperX.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\PepperX.exe
"C:\Users\Admin\AppData\Local\Temp\PepperX.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Windows" /sc ONLOGON /tr "C:\Windows\system32\SubDir\PepperX.exe" /rl HIGHEST /f
C:\Windows\system32\SubDir\PepperX.exe
"C:\Windows\system32\SubDir\PepperX.exe"
C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "Windows" /sc ONLOGON /tr "C:\Windows\system32\SubDir\PepperX.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp |
Files
memory/2636-0-0x000007FEF5BC3000-0x000007FEF5BC4000-memory.dmp
memory/2636-1-0x0000000000B60000-0x0000000000E84000-memory.dmp
memory/2636-2-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp
C:\Windows\System32\SubDir\PepperX.exe
| MD5 | 2ed601b0043d457f70fff1f1846acebb |
| SHA1 | 7c1a93357661d9b7ae82f570db12267b0163dc75 |
| SHA256 | fcece45f00b710bd5cb01a2a79781c871f1bd36fac18e00e85bd6452ecd5eadd |
| SHA512 | 36abc1f2c857e6d266b8bf7544f9f7bae9d1d8b96487588c0c7bb20f725323d12979831de4616d7af59424b4d2851359b2f2f5e97845585da6e7b18902f90d72 |
memory/3068-8-0x00000000011B0000-0x00000000014D4000-memory.dmp
memory/3068-10-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp
memory/2636-9-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp
memory/3068-11-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp
memory/3068-12-0x000007FEF5BC0000-0x000007FEF65AC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-19 19:55
Reported
2024-08-19 19:57
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\SubDir\PepperX.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\system32\SubDir | C:\Windows\system32\SubDir\PepperX.exe | N/A |
| File created | C:\Windows\system32\SubDir\PepperX.exe | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir\PepperX.exe | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | N/A |
| File opened for modification | C:\Windows\system32\SubDir\PepperX.exe | C:\Windows\system32\SubDir\PepperX.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\PepperX.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\SubDir\PepperX.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\SubDir\PepperX.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1044 wrote to memory of 628 | N/A | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1044 wrote to memory of 628 | N/A | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 1044 wrote to memory of 3680 | N/A | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | C:\Windows\system32\SubDir\PepperX.exe |
| PID 1044 wrote to memory of 3680 | N/A | C:\Users\Admin\AppData\Local\Temp\PepperX.exe | C:\Windows\system32\SubDir\PepperX.exe |
| PID 3680 wrote to memory of 2924 | N/A | C:\Windows\system32\SubDir\PepperX.exe | C:\Windows\SYSTEM32\schtasks.exe |
| PID 3680 wrote to memory of 2924 | N/A | C:\Windows\system32\SubDir\PepperX.exe | C:\Windows\SYSTEM32\schtasks.exe |
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\PepperX.exe
"C:\Users\Admin\AppData\Local\Temp\PepperX.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows" /sc ONLOGON /tr "C:\Windows\system32\SubDir\PepperX.exe" /rl HIGHEST /f
C:\Windows\system32\SubDir\PepperX.exe
"C:\Windows\system32\SubDir\PepperX.exe"
C:\Windows\SYSTEM32\schtasks.exe
"schtasks" /create /tn "Windows" /sc ONLOGON /tr "C:\Windows\system32\SubDir\PepperX.exe" /rl HIGHEST /f
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 73.190.43.125:4782 | tcp | |
| 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 | 73.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.21.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 73.190.43.125:4782 | tcp | |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp | |
| IE | 52.111.236.23:443 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp | |
| US | 73.190.43.125:4782 | tcp |
Files
memory/1044-0-0x00007FF8FF573000-0x00007FF8FF575000-memory.dmp
memory/1044-1-0x0000000000660000-0x0000000000984000-memory.dmp
memory/1044-2-0x00007FF8FF570000-0x00007FF900031000-memory.dmp
C:\Windows\System32\SubDir\PepperX.exe
| MD5 | 2ed601b0043d457f70fff1f1846acebb |
| SHA1 | 7c1a93357661d9b7ae82f570db12267b0163dc75 |
| SHA256 | fcece45f00b710bd5cb01a2a79781c871f1bd36fac18e00e85bd6452ecd5eadd |
| SHA512 | 36abc1f2c857e6d266b8bf7544f9f7bae9d1d8b96487588c0c7bb20f725323d12979831de4616d7af59424b4d2851359b2f2f5e97845585da6e7b18902f90d72 |
memory/3680-10-0x00007FF8FF570000-0x00007FF900031000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\PepperX.exe.log
| MD5 | baf55b95da4a601229647f25dad12878 |
| SHA1 | abc16954ebfd213733c4493fc1910164d825cac8 |
| SHA256 | ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924 |
| SHA512 | 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545 |
memory/1044-11-0x00007FF8FF570000-0x00007FF900031000-memory.dmp
memory/3680-12-0x00007FF8FF570000-0x00007FF900031000-memory.dmp
memory/3680-13-0x000000001AF70000-0x000000001AFC0000-memory.dmp
memory/3680-14-0x000000001B8A0000-0x000000001B952000-memory.dmp
memory/3680-15-0x00007FF8FF570000-0x00007FF900031000-memory.dmp