asyncrat | 396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/08/2026, 13:44

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
Size 45KB
Sample260804-q1ynkabf79
SHA256 396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87
MD5 cdb71aafdd46724cc4eefb2b3029f04c
SHA1 0a3ded65cb94ece635bb0b58e774101f2ebad09a
SHA512 52d3cc247766782b06113e0c61c16585355bbc66e3e48f0335e4844882a8ecd99ac51fc57a0c02c0ba9e8a8a133ed0a8b3ed86eb23da4273562d8edf7428b183
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q18Q0D3+/vPPjZPI7zjbwgH3i6Y2rnoL5BDZUx:cuR0JTPjY2DP32/jW73b3HSD6oLndUx
TLSH
T195232B0037E9812BF2BE4F7868F26145867AF6633503D6491CC452DB5613FC69A43AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

fimsexvietnam.com:80
fimsexvietnam.com:22
fimsexvietnam.com:8080
fimsexvietnam.com:8880
fimsexvietnam.com:2052
fimsexvietnam.com:2082
fimsexvietnam.com:2086
fimsexvietnam.com:2095
fimsexvietnam.com:443
fimsexvietnam.com:2053
fimsexvietnam.com:2083
fimsexvietnam.com:2087
fimsexvietnam.com:2096
fimsexvietnam.com:8443
www.fimsexvietnam.com:80
www.fimsexvietnam.com:22
www.fimsexvietnam.com:8080
www.fimsexvietnam.com:8880
www.fimsexvietnam.com:2052
www.fimsexvietnam.com:2082
www.fimsexvietnam.com:2086
www.fimsexvietnam.com:2095
www.fimsexvietnam.com:443
www.fimsexvietnam.com:2053
www.fimsexvietnam.com:2083
www.fimsexvietnam.com:2087
www.fimsexvietnam.com:2096
www.fimsexvietnam.com:8443
trickbot.fimsexvietnam.com:80
trickbot.fimsexvietnam.com:22
trickbot.fimsexvietnam.com:8080
trickbot.fimsexvietnam.com:8880
trickbot.fimsexvietnam.com:2052
trickbot.fimsexvietnam.com:2082
trickbot.fimsexvietnam.com:2086
trickbot.fimsexvietnam.com:2095
trickbot.fimsexvietnam.com:443
trickbot.fimsexvietnam.com:2053
trickbot.fimsexvietnam.com:2083
trickbot.fimsexvietnam.com:2087
trickbot.fimsexvietnam.com:2096
trickbot.fimsexvietnam.com:8443
agenttesla.fimsexvietnam.com:80
agenttesla.fimsexvietnam.com:22
agenttesla.fimsexvietnam.com:8080
agenttesla.fimsexvietnam.com:8880
agenttesla.fimsexvietnam.com:2052
agenttesla.fimsexvietnam.com:2082
agenttesla.fimsexvietnam.com:2086
agenttesla.fimsexvietnam.com:2095
agenttesla.fimsexvietnam.com:443
agenttesla.fimsexvietnam.com:2053
agenttesla.fimsexvietnam.com:2083
agenttesla.fimsexvietnam.com:2087
agenttesla.fimsexvietnam.com:2096
agenttesla.fimsexvietnam.com:8443

Mutex

gMfyfCkhP4JJ

Attributes

delay
0
install
true
install_file
xi1n.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/0x000a000000000441-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4520	xi1n.exe
4876	xi1n.exe

Outbound SSH connection to public host 2 TTPs 1 IoCs

SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

command_and_control

Protocol Tunneling

T1572

Network Service Discovery

T1046

description	flow	ioc
SSH destination	16	172.67.182.173:22

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
2528	cmd.exe
1360	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	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.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	xi1n.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xi1n.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5500	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
5060	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
Token: SeDebugPrivilege	4520	xi1n.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5576 wrote to memory of 2528	5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe	89
PID 5576 wrote to memory of 1360	5576	396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe	91
PID 2528 wrote to memory of 5060	2528	cmd.exe	93
PID 1360 wrote to memory of 5500	1360	cmd.exe	94
PID 1360 wrote to memory of 4876	1360	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe
"C:\Users\Admin\AppData\Local\Temp\396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "xi1n" /tr '"C:\Users\Admin\AppData\Roaming\xi1n.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2528
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "xi1n" /tr '"C:\Users\Admin\AppData\Roaming\xi1n.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5060
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3D0F.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5500
- - C:\Users\Admin\AppData\Roaming\xi1n.exe
    "C:\Users\Admin\AppData\Roaming\xi1n.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4876

C:\Users\Admin\AppData\Roaming\xi1n.exe
"C:\Users\Admin\AppData\Roaming\xi1n.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4520

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

Network Service Discovery

T1046

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Protocol Tunneling

T1572

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmp3D0F.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp3D0F.tmp.bat
Size 148B
SHA256 17cd08bed39ae1993fdaf1dad82fad7fd8ff4e2529f48afae1d886911d7856c8
MD5 d51b43a706382169472cb0aa6e3cc572
SHA1 e2d5366a0aa61eb30906c819f491f4f5d137b4e1
SHA512 61a1ceacc28deb4cefd68ddd1d6e62bb278cbaf4ba710237024cf103d098dabc8889e97a7767172e8c95a483f9b787d01999fca6afaa933414955045bbc5ee22
TLSH
T15EC02B4251C5FB0F2C09141302FEE88C91B27C1D3F80BB00D305401D22C1D58F0DA341
MD5 SHA1 SHA512 TLSH

Submit Download

xi1n.exe

Path C:\Users\Admin\AppData\Roaming\xi1n.exe
Size 45KB
SHA256 396612e9417bd02920aba1fb9cdfd56d0409878feeb466453a01e9176555fa87
MD5 cdb71aafdd46724cc4eefb2b3029f04c
SHA1 0a3ded65cb94ece635bb0b58e774101f2ebad09a
SHA512 52d3cc247766782b06113e0c61c16585355bbc66e3e48f0335e4844882a8ecd99ac51fc57a0c02c0ba9e8a8a133ed0a8b3ed86eb23da4273562d8edf7428b183
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q18Q0D3+/vPPjZPI7zjbwgH3i6Y2rnoL5BDZUx:cuR0JTPjY2DP32/jW73b3HSD6oLndUx
TLSH
T195232B0037E9812BF2BE4F7868F26145867AF6633503D6491CC452DB5613FC69A43AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/4520-12-0x00000000744B0000-0x0000000074C6C000-memory.dmp

Download

memory/4520-14-0x00000000744B0000-0x0000000074C6C000-memory.dmp

Download

memory/5576-0-0x00000000746C2000-0x00000000746C3000-memory.dmp

Download

memory/5576-1-0x0000000000410000-0x0000000000422000-memory.dmp

Download

memory/5576-2-0x00000000746B0000-0x0000000074E6C000-memory.dmp

Download

memory/5576-3-0x0000000004F00000-0x0000000004F9C000-memory.dmp

Download

memory/5576-8-0x00000000746B0000-0x0000000074E6C000-memory.dmp

Download