Analysis
- max time kernel
149s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
06/11/2024, 22:57
General
- Target fnuconaa.exe
- Size 3.1MB
- Sample241106-2xqdkaskbm
- SHA256 ef38bf040afa8ce0bcde1328774e964bc19ef972c56d35b914be2c4c3aa3c080
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
192.168.0.9:57013
-
e51e2b65-e963-4051-9736-67d57ed46798
-
encryption_key
AEA258EF65BF1786F0F767C0BE2497ECC304C46F
-
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 family
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Scheduled Task/Job: Scheduled Task 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\fnuconaa.exe"C:\Users\Admin\AppData\Local\Temp\fnuconaa.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
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 "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Client.exe
memory/2636-10-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp
memory/2636-11-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp
memory/2636-12-0x000000001B820000-0x000000001B870000-memory.dmp
memory/2636-13-0x000000001B930000-0x000000001B9E2000-memory.dmp
memory/2636-14-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp
memory/4752-0-0x00007FFAE2C43000-0x00007FFAE2C45000-memory.dmp
memory/4752-1-0x0000000000EB0000-0x00000000011D4000-memory.dmp
memory/4752-2-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp
memory/4752-9-0x00007FFAE2C40000-0x00007FFAE3701000-memory.dmp