Analysis
- max time kernel
147s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20231020-en - resource tags
- submitted
22/10/2023, 14:07
General
- Target NEAS.NEASc7550dc220b264239f7250607d6af8a0123107be4c377a3c94e5f8e63984b17dexeexe_JC.exe
- Size 3.2MB
- Sample231022-rfekmabc35
- SHA256 c7550dc220b264239f7250607d6af8a0123107be4c377a3c94e5f8e63984b17d
Malware Config
Extracted
-
quasar
-
1.4.1
-
Java
-
VisoXD-63447.portmap.host:63447
-
6907f902-de45-4188-8da5-3e22f2a6633e
-
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 2 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/4156-0-0x0000000000380000-0x00000000006B4000-memory.dmp
memory/4156-1-0x00007FFF66820000-0x00007FFF672E1000-memory.dmp
memory/4156-2-0x000000001B320000-0x000000001B330000-memory.dmp
memory/4156-3-0x000000001BA70000-0x000000001BAC0000-memory.dmp
memory/4156-4-0x000000001BB80000-0x000000001BC32000-memory.dmp
memory/4156-5-0x00007FFF66820000-0x00007FFF672E1000-memory.dmp
memory/4156-6-0x000000001B320000-0x000000001B330000-memory.dmp