asyncrat | 618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1

Analysis

max time kernel
148s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/08/2026, 15:49

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General

Target
618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
Size 45KB
Sample260831-s9chsshc89
SHA256 618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1
MD5 4123d197c76a1408cdb77f928adcbc90
SHA1 68d7eb0abfa450d3918d0daa9014533c95c4ffc1
SHA512 50892df3142e86cdc5dac0933a13f98d5d4b7788d78e0f2c3eb64722c72f2d1cad3176a194f7da435c3705246950e08fc88318c1f16b96ad894522e9b07070f8
SSDEEP 768:8uuSpTg7GBoWUSH6+mo2qYh6R8aI3OPIOzjbfgC3ivbhH5BDZ0x:8uuSpTgyf2J+FO3O3boCSTpd0x
TLSH
T1D6231B0037E8C12BF2BE4FB89DF26146867AF6673602D58E1CC451DB5613FC68A426ED
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

phimheo3x.net:80
phimheo3x.net:22
phimheo3x.net:8080
phimheo3x.net:8880
phimheo3x.net:2052
phimheo3x.net:2082
phimheo3x.net:2086
phimheo3x.net:2095
phimheo3x.net:443
phimheo3x.net:2053
phimheo3x.net:2083
phimheo3x.net:2087
phimheo3x.net:2096
phimheo3x.net:8443
www.phimheo3x.net:80
www.phimheo3x.net:22
www.phimheo3x.net:8080
www.phimheo3x.net:8880
www.phimheo3x.net:2052
www.phimheo3x.net:2082
www.phimheo3x.net:2086
www.phimheo3x.net:2095
www.phimheo3x.net:443
www.phimheo3x.net:2053
www.phimheo3x.net:2083
www.phimheo3x.net:2087
www.phimheo3x.net:2096
www.phimheo3x.net:8443
ursnif.phimheo3x.net:80
ursnif.phimheo3x.net:22
ursnif.phimheo3x.net:8080
ursnif.phimheo3x.net:8880
ursnif.phimheo3x.net:2052
ursnif.phimheo3x.net:2082
ursnif.phimheo3x.net:2086
ursnif.phimheo3x.net:2095
ursnif.phimheo3x.net:443
ursnif.phimheo3x.net:2053
ursnif.phimheo3x.net:2083
ursnif.phimheo3x.net:2087
ursnif.phimheo3x.net:2096
ursnif.phimheo3x.net:8443
triton.phimheo3x.net:80
triton.phimheo3x.net:22
triton.phimheo3x.net:8080
triton.phimheo3x.net:8880
triton.phimheo3x.net:2052
triton.phimheo3x.net:2082
triton.phimheo3x.net:2086
triton.phimheo3x.net:2095
triton.phimheo3x.net:443
triton.phimheo3x.net:2053
triton.phimheo3x.net:2083
triton.phimheo3x.net:2087
triton.phimheo3x.net:2096
triton.phimheo3x.net:8443
malware.phimheo3x.net:80
malware.phimheo3x.net:22
malware.phimheo3x.net:8080
malware.phimheo3x.net:8880
malware.phimheo3x.net:2052
malware.phimheo3x.net:2082
malware.phimheo3x.net:2086
malware.phimheo3x.net:2095
malware.phimheo3x.net:443
malware.phimheo3x.net:2053
malware.phimheo3x.net:2083
malware.phimheo3x.net:2087
malware.phimheo3x.net:2096
malware.phimheo3x.net:8443
mydoom.phimheo3x.net:80
mydoom.phimheo3x.net:22
mydoom.phimheo3x.net:8080
mydoom.phimheo3x.net:8880
mydoom.phimheo3x.net:2052
mydoom.phimheo3x.net:2082
mydoom.phimheo3x.net:2086
mydoom.phimheo3x.net:2095
mydoom.phimheo3x.net:443
mydoom.phimheo3x.net:2053
mydoom.phimheo3x.net:2083
mydoom.phimheo3x.net:2087
mydoom.phimheo3x.net:2096
mydoom.phimheo3x.net:8443

Mutex

xodmUIbf4nt1

Attributes

delay
0
install
true
install_file
mchx4k.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/0x000e00000001c4f5-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1164	mchx4k.exe
5016	mchx4k.exe

Outbound SSH connection to public host 2 TTPs 3 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	10	103.109.100.136:22
SSH destination	11	103.109.100.136:22
SSH destination	13	103.109.100.136:22

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
4396	cmd.exe
1900	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mchx4k.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mchx4k.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5976	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
2876	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
Token: SeDebugPrivilege	1164	mchx4k.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5092 wrote to memory of 4396	5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe	90
PID 5092 wrote to memory of 1900	5092	618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe	91
PID 4396 wrote to memory of 2876	4396	cmd.exe	94
PID 1900 wrote to memory of 5976	1900	cmd.exe	95
PID 1900 wrote to memory of 5016	1900	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe
"C:\Users\Admin\AppData\Local\Temp\618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "mchx4k" /tr '"C:\Users\Admin\AppData\Roaming\mchx4k.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4396
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "mchx4k" /tr '"C:\Users\Admin\AppData\Roaming\mchx4k.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2876
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp64BB.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5976
- - C:\Users\Admin\AppData\Roaming\mchx4k.exe
    "C:\Users\Admin\AppData\Roaming\mchx4k.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5016

C:\Users\Admin\AppData\Roaming\mchx4k.exe
"C:\Users\Admin\AppData\Roaming\mchx4k.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1164

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k GPSvcGroup
1⤵
PID:3960

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

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Downloads

tmp64BB.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp64BB.tmp.bat
Size 150B
SHA256 f00b40cb4ebe26daad772c5b3cd82dc1d7ff3c6b6dd1a0f9aa46d243148a95c5
MD5 b3b2d1580b55d4391230a0b6d38b8c1a
SHA1 6b0a4fb6b87a0f05aa78f9a5fb7d97f3dda70741
SHA512 145aac81fda4a8775f4a128daab6937ce77cd83b9bfb534bb938c82769f26a434a2e598330bb23312fdee17a240d4b28985f2a9625855f4d5356f7e6a1f14807
TLSH
T1B8C02B8361C9FA4E2905245706FBDACC9172AD1D3F40FB80D748800E5280449F0D9389
MD5 SHA1 SHA512 TLSH

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mchx4k.exe

Path C:\Users\Admin\AppData\Roaming\mchx4k.exe
Size 45KB
SHA256 618dbf3b697b163a046688af66db1417aad0ffb9220933cc6ed17015f2276fb1
MD5 4123d197c76a1408cdb77f928adcbc90
SHA1 68d7eb0abfa450d3918d0daa9014533c95c4ffc1
SHA512 50892df3142e86cdc5dac0933a13f98d5d4b7788d78e0f2c3eb64722c72f2d1cad3176a194f7da435c3705246950e08fc88318c1f16b96ad894522e9b07070f8
SSDEEP 768:8uuSpTg7GBoWUSH6+mo2qYh6R8aI3OPIOzjbfgC3ivbhH5BDZ0x:8uuSpTgyf2J+FO3O3boCSTpd0x
TLSH
T1D6231B0037E8C12BF2BE4FB89DF26146867AF6673602D58E1CC451DB5613FC68A426ED
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1164-12-0x0000000074830000-0x0000000074FEC000-memory.dmp

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memory/1164-14-0x0000000074830000-0x0000000074FEC000-memory.dmp

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memory/5092-0-0x00000000749E2000-0x00000000749E3000-memory.dmp

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memory/5092-1-0x0000000000E20000-0x0000000000E32000-memory.dmp

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memory/5092-2-0x00000000749D0000-0x000000007518C000-memory.dmp

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memory/5092-3-0x00000000058A0000-0x000000000593C000-memory.dmp

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memory/5092-8-0x00000000749D0000-0x000000007518C000-memory.dmp

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