asyncrat | 8415a73cfe1e48f8254cbb9a9b7ce6db4d2c40e23b35c8cd9df35e1d20db6fa6

Resubmissions

04/07/2026, 01:39

260704-b27wasas2110

04/07/2026, 01:32

260704-bxyrtsev3k10

Analysis

max time kernel
298s
max time network
301s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260629-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/07/2026, 01:39

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General

Target
ck9.exe
Size 45KB
Sample260704-b27wasas21
SHA256 8415a73cfe1e48f8254cbb9a9b7ce6db4d2c40e23b35c8cd9df35e1d20db6fa6
MD5 44ac9470709ee1cc55c494c4959bbc8a
SHA1 e3f0e768c863bb5518c34ccf9fb1a9e04b89e438
SHA512 d95556170f5d840ffebb98ae62b52ab3b47af7ab8158670e937ed4e729f1ebabc7db025b1a590b2309f10de648bd3432984b090b0cc146992984f0922b53f0ab
SSDEEP 768:Ru6+dT9slTJWUhDuzmo2qLS1uGJAcGYPPIAgjb/gX3iVOjgLZ8V1vxeM5FMzdBDb:Ru6+dT9We25sxxAIbIXSVOKCV1vxNWPH
TLSH
T1F1231B003BD8812BF2BE4F78ACF25145867BF6636603D94A2CC451D75613FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

foxcoins.io:443
foxcoins.io:80
foxcoins.io:25
foxcoins.io:8443
chefhsushunanstar.com:443
chefhsushunanstar.com:80
chefhsushunanstar.com:25
chefhsushunanstar.com:8443
traditionalnativegames.org:443
traditionalnativegames.org:80
traditionalnativegames.org:25
traditionalnativegames.org:8443
cakhia3.site:443
cakhia3.site:80
cakhia3.site:25
cakhia3.site:8443

Mutex

9yfN62PIGCHI

Attributes

delay
9
install
true
install_file
ck9.exe
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/0x000d00000001c612-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
6452	ck9.exe
4776	ck9.exe

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

System Information Discovery
T1082

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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ck9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ck9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ck9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4412	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
2416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe
6616	ck9.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	6616	ck9.exe
Token: SeDebugPrivilege	6452	ck9.exe
Token: SeDebugPrivilege	6452	ck9.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 6616 wrote to memory of 6076	6616	ck9.exe	90
PID 6616 wrote to memory of 3276	6616	ck9.exe	92
PID 6076 wrote to memory of 2416	6076	cmd.exe	94
PID 3276 wrote to memory of 4412	3276	cmd.exe	95
PID 3276 wrote to memory of 4776	3276	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\ck9.exe
"C:\Users\Admin\AppData\Local\Temp\ck9.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:6616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ck9" /tr '"C:\Users\Admin\AppData\Roaming\ck9.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:6076
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ck9" /tr '"C:\Users\Admin\AppData\Roaming\ck9.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2416
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9E6E.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3276
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4412
- - C:\Users\Admin\AppData\Roaming\ck9.exe
    "C:\Users\Admin\AppData\Roaming\ck9.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4776

C:\Users\Admin\AppData\Roaming\ck9.exe
"C:\Users\Admin\AppData\Roaming\ck9.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:6452

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

tmp9E6E.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9E6E.tmp.bat
Size 147B
SHA256 e702116372743fdf9b31dfb5fde674241241b1846d5a5b5205e8925fa3c467bf
MD5 7846bb453965ad98fe7e58617d4915a8
SHA1 37dbb8c354079c705b0ee025f7c78a143aee252d
SHA512 fb56e53567635ba6fd95ae8479f99ac7dd9b02f781d04f43e01cba703f4c2ddbe21efe739332ad3b2726292a34b8470e39a6eef25708fc38407fd8ba7a7ad648
TLSH
T1E2C02B6756C6EA0F3805141303FBDC8CA1726C197F80BF40D304400D5280948F0D9381
MD5 SHA1 SHA512 TLSH

Submit Download

ck9.exe

Path C:\Users\Admin\AppData\Roaming\ck9.exe
Size 45KB
SHA256 8415a73cfe1e48f8254cbb9a9b7ce6db4d2c40e23b35c8cd9df35e1d20db6fa6
MD5 44ac9470709ee1cc55c494c4959bbc8a
SHA1 e3f0e768c863bb5518c34ccf9fb1a9e04b89e438
SHA512 d95556170f5d840ffebb98ae62b52ab3b47af7ab8158670e937ed4e729f1ebabc7db025b1a590b2309f10de648bd3432984b090b0cc146992984f0922b53f0ab
SSDEEP 768:Ru6+dT9slTJWUhDuzmo2qLS1uGJAcGYPPIAgjb/gX3iVOjgLZ8V1vxeM5FMzdBDb:Ru6+dT9We25sxxAIbIXSVOKCV1vxNWPH
TLSH
T1F1231B003BD8812BF2BE4F78ACF25145867BF6636603D94A2CC451D75613FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/6452-13-0x0000000074EA0000-0x000000007565C000-memory.dmp

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memory/6452-15-0x0000000074EA0000-0x000000007565C000-memory.dmp

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memory/6616-0-0x0000000074F22000-0x0000000074F23000-memory.dmp

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memory/6616-1-0x0000000000230000-0x0000000000242000-memory.dmp

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memory/6616-2-0x0000000074F22000-0x0000000074F23000-memory.dmp

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memory/6616-3-0x0000000074F10000-0x00000000756CC000-memory.dmp

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memory/6616-4-0x0000000004DC0000-0x0000000004E5C000-memory.dmp

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memory/6616-9-0x0000000074F10000-0x00000000756CC000-memory.dmp

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