Analysis
- max time kernel
148s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
25/03/2024, 17:04
General
- Target Client-built.exe
- Size 3.1MB
- Sample240325-vk8aaade97
- SHA256 41fb2d76ef77875fcc5705cd3f2bb62dcbbde74d66f40638c517dea35b69f73f
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
76.104.23.114:139
-
d5c994be-83d1-489e-8cbb-422adccf5b54
-
encryption_key
517E2EAAA9545D955BB5F8F2BA11BC58FEA59B3C
-
install_name
Luna.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Epic Games
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 3 IoCs
- Executes dropped EXE 1 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 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\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Epic Games" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Luna.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Luna.exe"C:\Users\Admin\AppData\Roaming\SubDir\Luna.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Epic Games" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Luna.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Luna.exe
Luna.exe
memory/1116-10-0x00007FF974490000-0x00007FF974F51000-memory.dmp
memory/1116-11-0x0000000001410000-0x0000000001420000-memory.dmp
memory/1116-12-0x000000001C330000-0x000000001C380000-memory.dmp
memory/1116-13-0x000000001C440000-0x000000001C4F2000-memory.dmp
memory/1116-14-0x00007FF974490000-0x00007FF974F51000-memory.dmp
memory/1116-15-0x0000000001410000-0x0000000001420000-memory.dmp
memory/3908-0-0x0000000000150000-0x0000000000474000-memory.dmp
memory/3908-1-0x00007FF974490000-0x00007FF974F51000-memory.dmp
memory/3908-2-0x000000001B040000-0x000000001B050000-memory.dmp
memory/3908-9-0x00007FF974490000-0x00007FF974F51000-memory.dmp