Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
14/03/2024, 04:41
General
- Target eb2478815303c53967a5bfc532c2d512.exe
- Size 3.1MB
- Sample240314-fa5dbaag2s
- SHA256 712e51cdf1736e0858dab0a8c2735f5b47f6686001a8f6151864465da175f227
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
10.0.0.1:4782
-
74b9fe62-878c-4126-a9fc-f1c64e7fdb1d
-
encryption_key
747FBDB14A66689832324CF4CBD2540935454C08
-
install_name
Client.exe
-
log_directory
Logs
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reconnect_delay
1
-
startup_key
discord
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Drops file in System32 directory 5 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 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\eb2478815303c53967a5bfc532c2d512.exe"C:\Users\Admin\AppData\Local\Temp\eb2478815303c53967a5bfc532c2d512.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "discord" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Windows\system32\SubDir\Client.exe"C:\Windows\system32\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- 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 "discord" /sc ONLOGON /tr "C:\Windows\system32\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
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-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/2176-0-0x0000000000E00000-0x0000000001124000-memory.dmp
memory/2176-1-0x00007FFAAFEC0000-0x00007FFAB0981000-memory.dmp
memory/2176-2-0x000000001BF00000-0x000000001BF10000-memory.dmp
memory/2176-9-0x00007FFAAFEC0000-0x00007FFAB0981000-memory.dmp
memory/4612-10-0x00007FFAAFEC0000-0x00007FFAB0981000-memory.dmp
memory/4612-11-0x000000001B3F0000-0x000000001B400000-memory.dmp
memory/4612-12-0x000000001C050000-0x000000001C0A0000-memory.dmp
memory/4612-13-0x000000001C160000-0x000000001C212000-memory.dmp
memory/4612-14-0x00007FFAAFEC0000-0x00007FFAB0981000-memory.dmp