Analysis
- max time kernel
135s - max time network
137s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
02/07/2024, 00:58
General
- Target SeroXenLauncher.exe
- Size 409KB
- Sample240702-bbh49atgrp
- SHA256 5416eb9ce7028292f5810ab8acec85ab7cd55503bcdf097f3e2ce2a900577797
Malware Config
Extracted
-
quasar
-
3.1.5
-
SeroXen
-
127.0.0.1:4782
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browser-julia.gl.at.ply.gg:54488
-
$Sxr-GV6wZsGZZMeZ3qfenc
-
encryption_key
KH74MFPau2OXY0OqPzU8
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory 2 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SeroXenLauncher.exe"C:\Users\Admin\AppData\Local\Temp\SeroXenLauncher.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\SeroXenLauncher.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Windows\SysWOW64\SubDir\Client.exe"C:\Windows\SysWOW64\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Windows\SysWOW64\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Windows\SysWOW64\SCHTASKS.exe"SCHTASKS.exe" /create /tn "$77SeroXenLauncher.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\SeroXenLauncher.exe'" /sc onlogon /rl HIGHEST2⤵
- Scheduled Task/Job: Scheduled Task
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/2164-6-0x0000000005350000-0x0000000005362000-memory.dmp
memory/2164-1-0x0000000000460000-0x00000000004CC000-memory.dmp
memory/2164-3-0x0000000004EB0000-0x0000000004F42000-memory.dmp
memory/2164-4-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/2164-5-0x0000000004E10000-0x0000000004E76000-memory.dmp
memory/2164-0-0x00000000749CE000-0x00000000749CF000-memory.dmp
memory/2164-7-0x0000000006150000-0x000000000618C000-memory.dmp
memory/2164-2-0x00000000053C0000-0x0000000005964000-memory.dmp
memory/2164-15-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/3412-13-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/3412-12-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/3412-17-0x0000000006DD0000-0x0000000006DDA000-memory.dmp
memory/3412-18-0x00000000749C0000-0x0000000075170000-memory.dmp
memory/3412-19-0x00000000749C0000-0x0000000075170000-memory.dmp