Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260706-en - resource tags
- submitted
08/07/2026, 05:54
General
- Target YeuTngan.exe
- Size 45KB
- Sample260708-glv5fscv2n
- SHA256 8c04c9322cca304ed400505f6a609e29105f606fe63c81398354fb48fb89bd0b
Malware Config
Extracted
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asyncrat
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0.5.8
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Default
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www.tk999vip.com:8443
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www.tk999vip.com:81
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www.tk999vip.com:7878
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www.tk999vip.com:8787
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www.tk999vip.com:6789
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tk999vip.com:8443
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tk999vip.com:81
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tk999vip.com:7878
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tk999vip.com:8787
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tk999vip.com:6789
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7IpPYoiaantK
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delay
3
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install
true
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install_file
svchost.exe
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install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 29 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\YeuTngan.exe"C:\Users\Admin\AppData\Local\Temp\YeuTngan.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3E09.tmp.bat""2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\sihost.exesihost.exe1⤵
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C:\Windows\explorer.exeexplorer.exe /LOADSAVEDWINDOWS2⤵
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C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca1⤵
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C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe"C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
prep_Activatable Class_Hermes_perf.cache
tmp3E09.tmp.bat
svchost.exe
memory/792-15-0x0000000074540000-0x0000000074CFC000-memory.dmp
memory/792-13-0x0000000074540000-0x0000000074CFC000-memory.dmp
memory/2000-193-0x0000015F76AE0000-0x0000015F76D7E000-memory.dmp
memory/2948-60-0x0000028B85200000-0x0000028B85220000-memory.dmp
memory/2948-18-0x0000028B801E0000-0x0000028B802E0000-memory.dmp
memory/2948-25-0x0000028B81EE0000-0x0000028B81FE0000-memory.dmp
memory/2948-27-0x0000028B81DE0000-0x0000028B81E00000-memory.dmp
memory/2948-24-0x0000028B81CE0000-0x0000028B81D00000-memory.dmp
memory/2948-192-0x00000293A1000000-0x00000293A129E000-memory.dmp
memory/5276-9-0x00000000746B0000-0x0000000074E6C000-memory.dmp
memory/5276-4-0x0000000005990000-0x0000000005A2C000-memory.dmp
memory/5276-3-0x00000000054B0000-0x0000000005516000-memory.dmp
memory/5276-0-0x00000000746C2000-0x00000000746C3000-memory.dmp
memory/5276-2-0x00000000746B0000-0x0000000074E6C000-memory.dmp
memory/5276-1-0x00000000009E0000-0x00000000009F2000-memory.dmp