asyncrat | 8dc2222b5559fc9e0de1a8ddad1252548a0ffe955f8fe30a2312f098fe030870

Analysis

max time kernel
148s
max time network
131s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
29/07/2026, 14:30

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General

Target
4.exe
Size 48KB
Sample260729-rt744awejg
SHA256 8dc2222b5559fc9e0de1a8ddad1252548a0ffe955f8fe30a2312f098fe030870
MD5 9a69b1b8ed29539cd77c4e6622db156f
SHA1 0c5ded56ba58d9ab343df78531f3e78050abe239
SHA512 a81ae2af36327e01ab16dc4158c295d69d9d71cb98eff3ad098bbb9f3795c066ca51f8b6a4d096802e8899098e9cdcbae3dde1f3a789a160aef356e60f2711ae
SSDEEP 768:mhuM1ATgp8LM0WU2xzCmo2qrHBx3rnYMjdPIx5FfUFPmcSvz0bQbgbrBzVMRKjz3:uuM1ATAMz24Bx7ntax5FMpbQMbnMojz3
TLSH
T1AE233B0437D9C12BF2BE5F74A8F22146867BF1637603D64D1CC4429B5A23FC29A526EE
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

emag23.nl/vi-vn/:6606
emag23.nl/vi-vn/:80
emag23.nl/vi-vn/:8080
emag23.nl/vi-vn/:443
emag23.nl/vi-vn/:8443
emag23.nl/vi-vn/:22
emag23.nl/vi-vn/:23
jardinlosamates.com.mx/vi-vn/:6606
jardinlosamates.com.mx/vi-vn/:80
jardinlosamates.com.mx/vi-vn/:8080
jardinlosamates.com.mx/vi-vn/:443
jardinlosamates.com.mx/vi-vn/:8443
jardinlosamates.com.mx/vi-vn/:22
jardinlosamates.com.mx/vi-vn/:23
pcdn88.com/vi-vn/:6606
pcdn88.com/vi-vn/:80
pcdn88.com/vi-vn/:8080
pcdn88.com/vi-vn/:443
pcdn88.com/vi-vn/:8443
pcdn88.com/vi-vn/:22
pcdn88.com/vi-vn/:23
alverthorpesurgery.co.uk/vi-vn/:6606
alverthorpesurgery.co.uk/vi-vn/:80
alverthorpesurgery.co.uk/vi-vn/:8080
alverthorpesurgery.co.uk/vi-vn/:443
alverthorpesurgery.co.uk/vi-vn/:8443
alverthorpesurgery.co.uk/vi-vn/:22
alverthorpesurgery.co.uk/vi-vn/:23
mamapets.com.co/vi-vn/:6606
mamapets.com.co/vi-vn/:80
mamapets.com.co/vi-vn/:8080
mamapets.com.co/vi-vn/:443
mamapets.com.co/vi-vn/:8443
mamapets.com.co/vi-vn/:22
mamapets.com.co/vi-vn/:23
alinews.in/vi-vn:6606
alinews.in/vi-vn:80
alinews.in/vi-vn:8080
alinews.in/vi-vn:443
alinews.in/vi-vn:8443
alinews.in/vi-vn:22
alinews.in/vi-vn:23
wingerworthtennisclub.co.uk/vi-vn/:6606
wingerworthtennisclub.co.uk/vi-vn/:80
wingerworthtennisclub.co.uk/vi-vn/:8080
wingerworthtennisclub.co.uk/vi-vn/:443
wingerworthtennisclub.co.uk/vi-vn/:8443
wingerworthtennisclub.co.uk/vi-vn/:22
wingerworthtennisclub.co.uk/vi-vn/:23
evaelfie.ing/vi-vn/:6606
evaelfie.ing/vi-vn/:80
evaelfie.ing/vi-vn/:8080
evaelfie.ing/vi-vn/:443
evaelfie.ing/vi-vn/:8443
evaelfie.ing/vi-vn/:22
evaelfie.ing/vi-vn/:23

Mutex

Lgb1BEPHjdKE

Attributes

delay
3
install
true
install_file
GoogleUpdate.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/0x000e00000001c4c7-11.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1516	GoogleUpdate.exe
5852	GoogleUpdate.exe

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 2 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
2772	cmd.exe
4460	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	4.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GoogleUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GoogleUpdate.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3816	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
4204	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe
2496	4.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2496	4.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2496 wrote to memory of 2772	2496	4.exe	90
PID 2496 wrote to memory of 4460	2496	4.exe	92
PID 2772 wrote to memory of 4204	2772	cmd.exe	94
PID 4460 wrote to memory of 3816	4460	cmd.exe	95
PID 4460 wrote to memory of 5852	4460	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\4.exe
"C:\Users\Admin\AppData\Local\Temp\4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4204
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7AC4.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4460
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3816
- - C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe
    "C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5852

C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe
"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1516

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

tmp7AC4.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7AC4.tmp.bat
Size 156B
SHA256 727b632e8d9df30f99a59a9a73513c8c805dc7d437c9ce4bcb9220d2671360b1
MD5 1147c048d1e28076a51f63e52d7707db
SHA1 f0b1bf2c0afd00147449e8e1492fcf0a091bd8e7
SHA512 402c5a8208b34e1f8e024f3beea4aec758b42e830e756afc376fe26d29182c43b668a16202416e3b6dd409cd1c8ec2e85d5436c11f56f25abfd19e699dca91e7
TLSH
T1BBC08C5361CAEA6E2805A81712FAD48D91A269593E46AB008348402A2280888E8E9286
MD5 SHA1 SHA512 TLSH

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GoogleUpdate.exe

Path C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe
Size 48KB
SHA256 8dc2222b5559fc9e0de1a8ddad1252548a0ffe955f8fe30a2312f098fe030870
MD5 9a69b1b8ed29539cd77c4e6622db156f
SHA1 0c5ded56ba58d9ab343df78531f3e78050abe239
SHA512 a81ae2af36327e01ab16dc4158c295d69d9d71cb98eff3ad098bbb9f3795c066ca51f8b6a4d096802e8899098e9cdcbae3dde1f3a789a160aef356e60f2711ae
SSDEEP 768:mhuM1ATgp8LM0WU2xzCmo2qrHBx3rnYMjdPIx5FfUFPmcSvz0bQbgbrBzVMRKjz3:uuM1ATAMz24Bx7ntax5FMpbQMbnMojz3
TLSH
T1AE233B0437D9C12BF2BE5F74A8F22146867BF1637603D64D1CC4429B5A23FC29A526EE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1516-13-0x0000000074A00000-0x00000000751BC000-memory.dmp

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memory/1516-15-0x0000000074A00000-0x00000000751BC000-memory.dmp

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memory/2496-0-0x0000000074A12000-0x0000000074A13000-memory.dmp

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memory/2496-1-0x0000000000C80000-0x0000000000C92000-memory.dmp

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memory/2496-2-0x0000000074A00000-0x00000000751BC000-memory.dmp

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memory/2496-3-0x0000000005770000-0x00000000057D6000-memory.dmp

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memory/2496-4-0x0000000005C70000-0x0000000005D0C000-memory.dmp

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memory/2496-10-0x0000000074A00000-0x00000000751BC000-memory.dmp

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