Analysis
- max time kernel
150s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
30/05/2024, 12:59
General
- Target Beta.exe
- Size 3.1MB
- Sample240530-p8bnbsae68
- SHA256 fb80d28a129184b6a273bd893aeee80765b6ec3eb617d90c6d32d0738bcbbfef
Malware Config
Extracted
-
quasar
-
1.4.1
-
Astro-1
-
arthurus36.duckdns.org:5555
-
ad7cd985-5e2e-45a3-9246-b82449c7c4d8
-
encryption_key
6314C8C60AA1035CEB920FD38F0342E398BAF5D0
-
install_name
cmdprmpt.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
systemdex
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 3 IoCs
- 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 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\Beta.exe"C:\Users\Admin\AppData\Local\Temp\Beta.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "systemdex" /sc ONLOGON /tr "C:\Windows\system32\cmdprmpt.exe" /rl HIGHEST /f2⤵
- Creates scheduled task(s)
-
-
C:\Windows\system32\cmdprmpt.exe"C:\Windows\system32\cmdprmpt.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\schtasks.exe"schtasks" /create /tn "systemdex" /sc ONLOGON /tr "C:\Windows\system32\cmdprmpt.exe" /rl HIGHEST /f3⤵
- Creates scheduled task(s)
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
cmdprmpt.exe
memory/2308-10-0x00007FFEB5BD0000-0x00007FFEB6691000-memory.dmp
memory/2308-11-0x00007FFEB5BD0000-0x00007FFEB6691000-memory.dmp
memory/2308-12-0x000000001BF20000-0x000000001BF70000-memory.dmp
memory/2308-13-0x000000001C4A0000-0x000000001C552000-memory.dmp
memory/2308-14-0x00007FFEB5BD0000-0x00007FFEB6691000-memory.dmp
memory/3260-0-0x00007FFEB5BD3000-0x00007FFEB5BD5000-memory.dmp
memory/3260-1-0x00000000004C0000-0x00000000007E4000-memory.dmp
memory/3260-2-0x00007FFEB5BD0000-0x00007FFEB6691000-memory.dmp
memory/3260-9-0x00007FFEB5BD0000-0x00007FFEB6691000-memory.dmp