Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20251015-en - resource tags
- submitted
04/12/2025, 12:20
General
- Target _da04c6a91ab8dcab99b842368c4f1ccd3a54033a69f63bfaf2c6fd0369f7c734.exe
- Size 3.1MB
- Sample251204-ph5tgswjet
- SHA256 da04c6a91ab8dcab99b842368c4f1ccd3a54033a69f63bfaf2c6fd0369f7c734
Malware Config
Extracted
-
quasar
-
1.4.1
-
ShellHost
-
making-council.gl.at.ply.gg:23790
-
fa449e99-0208-42d7-a6e6-347f61848f6b
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encryption_key
6F39C29B59A19B75B3CC4AFAD94A090896A9767E
-
install_name
ShellHost.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
ShellHost
-
subdirectory
a7
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Drops file in System32 directory 5 IoCs
- 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 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 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\_da04c6a91ab8dcab99b842368c4f1ccd3a54033a69f63bfaf2c6fd0369f7c734.exe"C:\Users\Admin\AppData\Local\Temp\_da04c6a91ab8dcab99b842368c4f1ccd3a54033a69f63bfaf2c6fd0369f7c734.exe"1⤵
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "ShellHost" /sc ONLOGON /tr "C:\Windows\system32\a7\ShellHost.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
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C:\Windows\system32\a7\ShellHost.exe"C:\Windows\system32\a7\ShellHost.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "ShellHost" /sc ONLOGON /tr "C:\Windows\system32\a7\ShellHost.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
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C:\Windows\system32\a7\ShellHost.exeC:\Windows\system32\a7\ShellHost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
ShellHost.exe
memory/5232-9-0x000000001B6C0000-0x000000001B6D0000-memory.dmp
memory/5232-11-0x000000001B480000-0x000000001B4D0000-memory.dmp
memory/5232-12-0x000000001BE80000-0x000000001BF32000-memory.dmp
memory/5232-13-0x000000001B6C0000-0x000000001B6D0000-memory.dmp
memory/5568-0-0x00000000007D0000-0x0000000000AF4000-memory.dmp
memory/5568-1-0x000000001B7A0000-0x000000001B7B0000-memory.dmp