asyncrat | fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103

Analysis

max time kernel
148s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
18/07/2026, 15:18

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
Size 45KB
Sample260718-sp4rjshx21
SHA256 fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103
MD5 6c5f287cd228f697090129411aaf286e
SHA1 5d836b377c79f1bc1f6574ab4e5fb9b33d721e9f
SHA512 1cafde4e4a1074e5488903087e2df5ceac333ae4801e9ea4f9e65c792e56f33adbb01d2f0cac8e02eb2f95c4d7570cf117626e9cbb049e13d89b80d590ec7806
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2qlI3Xo5EayPI+zjb3gX3iDmQVzmZFFtqyBDZMx:wuDWZTpMZSB2jQEab+3bQXS6QiFFtddO
TLSH
T157232B003BE9822BF2BE4F789CF26245867AF5733603D54A1CC451DB5613FC69642AFA
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

vuasexviet.com:80
vuasexviet.com:22
vuasexviet.com:8080
vuasexviet.com:8880
vuasexviet.com:2052
vuasexviet.com:2082
vuasexviet.com:2086
vuasexviet.com:2095
vuasexviet.com:443
vuasexviet.com:2053
vuasexviet.com:2083
vuasexviet.com:2087
vuasexviet.com:2096
vuasexviet.com:8443
www.vuasexviet.com:80
www.vuasexviet.com:22
www.vuasexviet.com:8080
www.vuasexviet.com:8880
www.vuasexviet.com:2052
www.vuasexviet.com:2082
www.vuasexviet.com:2086
www.vuasexviet.com:2095
www.vuasexviet.com:443
www.vuasexviet.com:2053
www.vuasexviet.com:2083
www.vuasexviet.com:2087
www.vuasexviet.com:2096
www.vuasexviet.com:8443
locky.vuasexviet.com:80
locky.vuasexviet.com:22
locky.vuasexviet.com:8080
locky.vuasexviet.com:8880
locky.vuasexviet.com:2052
locky.vuasexviet.com:2082
locky.vuasexviet.com:2086
locky.vuasexviet.com:2095
locky.vuasexviet.com:443
locky.vuasexviet.com:2053
locky.vuasexviet.com:2083
locky.vuasexviet.com:2087
locky.vuasexviet.com:2096
locky.vuasexviet.com:8443
client.vuasexviet.com:80
client.vuasexviet.com:22
client.vuasexviet.com:8080
client.vuasexviet.com:8880
client.vuasexviet.com:2052
client.vuasexviet.com:2082
client.vuasexviet.com:2086
client.vuasexviet.com:2095
client.vuasexviet.com:443
client.vuasexviet.com:2053
client.vuasexviet.com:2083
client.vuasexviet.com:2087
client.vuasexviet.com:2096
client.vuasexviet.com:8443

Mutex

rbygmrXM3MLP

Attributes

delay
0
install
true
install_file
a0xj0.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/0x000f00000001c54b-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1364	a0xj0.exe
3476	a0xj0.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
5352	cmd.exe
1512	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	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	a0xj0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a0xj0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4976	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
1784	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
Token: SeDebugPrivilege	1364	a0xj0.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 5352	4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe	89
PID 4624 wrote to memory of 1512	4624	fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe	91
PID 5352 wrote to memory of 1784	5352	cmd.exe	93
PID 1512 wrote to memory of 4976	1512	cmd.exe	94
PID 1512 wrote to memory of 3476	1512	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe
"C:\Users\Admin\AppData\Local\Temp\fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "a0xj0" /tr '"C:\Users\Admin\AppData\Roaming\a0xj0.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5352
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "a0xj0" /tr '"C:\Users\Admin\AppData\Roaming\a0xj0.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1784
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7768.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1512
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4976
- - C:\Users\Admin\AppData\Roaming\a0xj0.exe
    "C:\Users\Admin\AppData\Roaming\a0xj0.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3476

C:\Users\Admin\AppData\Roaming\a0xj0.exe
"C:\Users\Admin\AppData\Roaming\a0xj0.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1364

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

Replay Monitor

Loading Replay Monitor...

Downloads

tmp7768.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7768.tmp.bat
Size 149B
SHA256 fa47f860449f61f5b6df55bbc84e53ef14dbac4396559cd40dc71d5017373061
MD5 2fc8670937f7d2a5590d2d5911f07ad9
SHA1 a1b06223cce87408f5ffdbb0e81686fd8d1d9877
SHA512 4c036c7c5daaf6a6632e04ae2a227d2dece535fe734e21bf56f8659201e1bf7d82176471092b6cda95e7780d0ee3c103bf8c1b2752a67e28637065060d80749d
TLSH
T1D9C02B8291C6EA5E3D09181302FBD79DA1B26C593F44BB10D308801D5680849F4D9741
MD5 SHA1 SHA512 TLSH

Submit Download

a0xj0.exe

Path C:\Users\Admin\AppData\Roaming\a0xj0.exe
Size 45KB
SHA256 fc996e22bc9902b6e7ff3ffcf012f023519ec37c80cb828135676e27d8ff2103
MD5 6c5f287cd228f697090129411aaf286e
SHA1 5d836b377c79f1bc1f6574ab4e5fb9b33d721e9f
SHA512 1cafde4e4a1074e5488903087e2df5ceac333ae4801e9ea4f9e65c792e56f33adbb01d2f0cac8e02eb2f95c4d7570cf117626e9cbb049e13d89b80d590ec7806
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2qlI3Xo5EayPI+zjb3gX3iDmQVzmZFFtqyBDZMx:wuDWZTpMZSB2jQEab+3bQXS6QiFFtddO
TLSH
T157232B003BE9822BF2BE4F789CF26245867AF5733603D54A1CC451DB5613FC69642AFA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1364-12-0x0000000074FD0000-0x000000007578C000-memory.dmp

Download

memory/1364-14-0x0000000074FD0000-0x000000007578C000-memory.dmp

Download

memory/4624-0-0x00000000751E2000-0x00000000751E3000-memory.dmp

Download

memory/4624-1-0x0000000000EB0000-0x0000000000EC2000-memory.dmp

Download

memory/4624-2-0x00000000751D0000-0x000000007598C000-memory.dmp

Download

memory/4624-3-0x0000000005A00000-0x0000000005A9C000-memory.dmp

Download

memory/4624-8-0x00000000751D0000-0x000000007598C000-memory.dmp

Download