Analysis
- max time kernel
149s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260629-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/07/2026, 12:43
Behavioral task
behavioral1
Sample
luck8-mobi.net.exe
Resource
win10v2004-20260513-en
11 signatures
150 seconds
General
- Target luck8-mobi.net.exe
- Size 3.1MB
- Sample260705-pyc4eacv8s
- SHA256 e3afdf3116130e1bceb65c3cc6bfa81b6ab25a009ec9a91163e7737ee20e7140
- MD5 fe263228b4af87dac31405ea5b272ba4
- SHA1 1bbd97fdc644825163fa2dd71c14476fbd523748
- SHA512 0e4d8fe6523924fb2da6788531f3de022fb200a9fa3de6fcf3a49aa8d7770ad87d9330c3942bc74222a96a3a7988bfbbdec02be3b2ea036b7669dafd78c05643
- SSDEEP 49152:Dvgz92YpaQI6oPZlhP3ReybewoloxNESExk/i6LoGdY9eTHHB72eh2NT:Dv692YpaQI6oPZlhP3Yybewoex4k
- TLSH T130E54B143BF85E23E1BBE673D5B0041667F0F82AB3A3EB1B1191677E1C53B5058426AB
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Extracted
Family
-
quasar
Version
-
1.4.1
Botnet
-
Office04
C2
-
luck8-mobi.net:443
-
www.luck8-mobi.net:443
-
luck8-mobi.net:80
-
www.luck8-mobi.net:80
Mutex
-
df141e1a-cbe9-4704-b740-8d73fa3dc5d1
Attributes
-
encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar payload 2 IoCs
resource yara_rule behavioral2/memory/4012-1-0x0000000000F10000-0x0000000001234000-memory.dmp family_quasar behavioral2/files/0x000d00000001c6a3-15.dat family_quasar - Executes dropped EXE 2 IoCs
pid Process 5784 Client.exe 1464 Client.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 6280 schtasks.exe 2028 schtasks.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4012 luck8-mobi.net.exe Token: SeDebugPrivilege 5784 Client.exe Token: SeDebugPrivilege 1464 Client.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 5784 Client.exe - Suspicious use of SendNotifyMessage 1 IoCs
pid Process 5784 Client.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 5784 Client.exe - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4012 wrote to memory of 6280 4012 luck8-mobi.net.exe 89 PID 4012 wrote to memory of 5784 4012 luck8-mobi.net.exe 91 PID 5784 wrote to memory of 2028 5784 Client.exe 94 - 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\luck8-mobi.net.exe"C:\Users\Admin\AppData\Local\Temp\luck8-mobi.net.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4012 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
PID:6280
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5784 -
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
PID:2028
-
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1464
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
- Size 3.1MB
- SHA256 e3afdf3116130e1bceb65c3cc6bfa81b6ab25a009ec9a91163e7737ee20e7140
- MD5 fe263228b4af87dac31405ea5b272ba4
- SHA1 1bbd97fdc644825163fa2dd71c14476fbd523748
- SHA512 0e4d8fe6523924fb2da6788531f3de022fb200a9fa3de6fcf3a49aa8d7770ad87d9330c3942bc74222a96a3a7988bfbbdec02be3b2ea036b7669dafd78c05643
- SSDEEP 49152:Dvgz92YpaQI6oPZlhP3ReybewoloxNESExk/i6LoGdY9eTHHB72eh2NT:Dv692YpaQI6oPZlhP3Yybewoex4k
- TLSH T130E54B143BF85E23E1BBE673D5B0041667F0F82AB3A3EB1B1191677E1C53B5058426AB
- MD5 SHA1 SHA512 SSDEEP TLSH