Analysis
- max time kernel
170s - max time network
190s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
18/10/2023, 17:53
General
- Target NEAS.0aef4060b3246aa07bebefef66145db0_JC.exe
- Size 3.1MB
- Sample231018-wgpjfaaf44
- SHA256 3ec0e6ae88e3285b292e05af77f0efc030981e81a7019f352cf16b67b43db043
Malware Config
Extracted
-
quasar
-
1.4.1
-
FeintClient
-
voicia-net.ddns.net:5555
-
796b105b-7482-402b-8f72-50827bad7ffa
-
encryption_key
5C137C4DD8DEF44B430CE4C349B9AF7B06B8C7FA
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
1000
-
startup_key
Feint-Start
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 3 IoCs
- Executes dropped EXE 1 IoCs
- Creates scheduled task(s) 1 TTPs 2 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 6 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.0aef4060b3246aa07bebefef66145db0_JC.exe"C:\Users\Admin\AppData\Local\Temp\NEAS.0aef4060b3246aa07bebefef66145db0_JC.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Feint-Start" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Feint-Start" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Client.exe
Client.exe
memory/4208-9-0x00007FFBCBD90000-0x00007FFBCC851000-memory.dmp
memory/4208-10-0x000000001B270000-0x000000001B280000-memory.dmp
memory/4208-12-0x000000001B2D0000-0x000000001B320000-memory.dmp
memory/4208-13-0x000000001BBE0000-0x000000001BC92000-memory.dmp
memory/4208-14-0x00007FFBCBD90000-0x00007FFBCC851000-memory.dmp
memory/4208-15-0x000000001B270000-0x000000001B280000-memory.dmp
memory/4660-0-0x0000000000300000-0x0000000000624000-memory.dmp
memory/4660-1-0x00007FFBCBD90000-0x00007FFBCC851000-memory.dmp
memory/4660-2-0x000000001B390000-0x000000001B3A0000-memory.dmp
memory/4660-11-0x00007FFBCBD90000-0x00007FFBCC851000-memory.dmp