Analysis
- max time kernel
146s - max time network
153s - platform
windows7_x64 - resource
win7-20231020-en - resource tags
- submitted
22/10/2023, 14:07
General
- Target NEAS.NEASc7550dc220b264239f7250607d6af8a0123107be4c377a3c94e5f8e63984b17dexeexe_JC.exe
- Size 3.2MB
- Sample231022-rfekmabc35
- SHA256 c7550dc220b264239f7250607d6af8a0123107be4c377a3c94e5f8e63984b17d
Score
10/10
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Java
C2
-
VisoXD-63447.portmap.host:63447
Mutex
-
6907f902-de45-4188-8da5-3e22f2a6633e
Attributes
-
encryption_key
C1589EF424F77018CD488E8307C8C1DF199C8A42
-
install_name
Crash_Logs.exe
-
log_directory
Java Logs
-
reconnect_delay
3000
-
startup_key
Java Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\NEAS.NEASc7550dc220b264239f7250607d6af8a0123107be4c377a3c94e5f8e63984b17dexeexe_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.NEASc7550dc220b264239f7250607d6af8a0123107be4c377a3c94e5f8e63984b17dexeexe_JC.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exe"schtasks" /create /tn "Java Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Crash_Logs.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/2160-0-0x0000000000960000-0x0000000000C94000-memory.dmp
memory/2160-1-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp
memory/2160-2-0x000000001B650000-0x000000001B6D0000-memory.dmp
memory/2160-3-0x000007FEF5460000-0x000007FEF5E4C000-memory.dmp
memory/2160-4-0x000000001B650000-0x000000001B6D0000-memory.dmp