Analysis
- max time kernel
151s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
- submitted
24/03/2023, 17:55
General
- Target sample.exe
- Size 502KB
- Sample230324-whtvjsae31
- SHA256 0c7583657697b6c586302c7f0e5d97d0a2b130ae4b48416d13be0aa4b4aeeb45
Score
10/10
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.0
Botnet
-
Office04
C2
-
46.65.125.215:4782
-
127.0.0.1:4782
Mutex
-
7ef6fca3-f1ee-4ff8-92d1-a2a274c9dad5
Attributes
-
encryption_key
E045129DE8403B71026DCE116C9F76FF2BC91056
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
WindowsDisplay
-
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\sample.exe"C:\Users\Admin\AppData\Local\Temp\sample.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "WindowsDisplay" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\sample.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3724-133-0x0000000000550000-0x00000000005D4000-memory.dmp
memory/3724-134-0x000000001B260000-0x000000001B270000-memory.dmp
memory/3724-135-0x000000001B1F0000-0x000000001B240000-memory.dmp
memory/3724-136-0x000000001BA30000-0x000000001BAE2000-memory.dmp
memory/3724-137-0x000000001B260000-0x000000001B270000-memory.dmp