Analysis
- max time kernel
132s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
16/12/2024, 22:57
General
- Target 611f6deadda658b042a6636e5e69c381fa65ed5cab95d2e8f5e43c285ed3cfc7.exe
- Size 3.1MB
- Sample241216-2xp3sstlfn
- SHA256 611f6deadda658b042a6636e5e69c381fa65ed5cab95d2e8f5e43c285ed3cfc7
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
98.51.190.130:20
-
11bbf22e-826e-486b-b024-adbd86228a9e
-
encryption_key
7A589EDBC6A581E125BF830EF0D05FC74BB75E30
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
ctfmon
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 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\611f6deadda658b042a6636e5e69c381fa65ed5cab95d2e8f5e43c285ed3cfc7.exe"C:\Users\Admin\AppData\Local\Temp\611f6deadda658b042a6636e5e69c381fa65ed5cab95d2e8f5e43c285ed3cfc7.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "ctfmon" /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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "ctfmon" /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
Loading Replay Monitor...
Downloads
Client.exe
memory/1152-10-0x00007FF9A05F0000-0x00007FF9A10B1000-memory.dmp
memory/1152-11-0x00007FF9A05F0000-0x00007FF9A10B1000-memory.dmp
memory/1152-12-0x000000001DD00000-0x000000001DD50000-memory.dmp
memory/1152-13-0x000000001DE10000-0x000000001DEC2000-memory.dmp
memory/1152-14-0x00007FF9A05F0000-0x00007FF9A10B1000-memory.dmp
memory/4184-0-0x00007FF9A05F3000-0x00007FF9A05F5000-memory.dmp
memory/4184-1-0x0000000000280000-0x00000000005A4000-memory.dmp
memory/4184-2-0x00007FF9A05F0000-0x00007FF9A10B1000-memory.dmp
memory/4184-9-0x00007FF9A05F0000-0x00007FF9A10B1000-memory.dmp