Analysis
- user interaction
yes - max time kernel
147s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
20/10/2026, 23:17
General
- Target Client-built.exe
- Size 3.1MB
- Sample261020-296lbaxtcw
- SHA256 0377bb7740db02b649cd8fdd7d22b59af73fe2b62b6b4fbcb28db35897aa53e4
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
192.168.86.182:4782
-
856bc72a-c033-4979-8b81-648608ce358d
-
encryption_key
CAB54268B185B9AC01074EC96011475A92F4430E
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 44 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of FindShellTrayWindow 42 IoCs
- Suspicious use of SendNotifyMessage 42 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k GPSvcGroup1⤵
-
C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
memory/436-20-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/436-28-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/436-27-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/436-29-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/436-25-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/436-26-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/436-24-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/436-18-0x00000238BD7E0000-0x00000238BD7E1000-memory.dmp
memory/4712-6-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-17-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-11-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-10-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-13-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-12-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-14-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-15-0x000000001CDD0000-0x000000001CE20000-memory.dmp
memory/4712-16-0x000000001CEE0000-0x000000001CF92000-memory.dmp
memory/4712-9-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-7-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-8-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-0-0x00007FF97F35F000-0x00007FF97F360000-memory.dmp
memory/4712-5-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-4-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-3-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-2-0x00007FF97F1D0000-0x00007FF97FB74000-memory.dmp
memory/4712-1-0x0000000000AE0000-0x0000000000E04000-memory.dmp