asyncrat | 89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292

Analysis

max time kernel
150s
max time network
150s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/07/2026, 17:22

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General

Target
89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
Size 45KB
Sample260724-vxjgpatsat
SHA256 89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292
MD5 f8999df82a093fd8402c31353afdb045
SHA1 da0729c5aa48c163b3dbd7d0d2dc4e8f72149f8e
SHA512 3e72a0ce7ee39246e8501762f1564845912752a3e543b4db065f89a1b37efd410cb6f35eceec09b074ffe765f101e3ea7ee92f1fa77575e23bd5d82f1ecb837e
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q97Iz/yPqiPIIzjbagX3i/BYJJWcoVbBDZ8x:0uPrpT/qY24c5I3bNXS/BKloVNd8x
TLSH
T1B2232A003BE9C127F2BE5F78ADF26105467AF6632A03D68D1CC4119B5613FC68A526FE
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

storage.heo3x.net:80
storage.heo3x.net:22
storage.heo3x.net:8080
storage.heo3x.net:8880
storage.heo3x.net:2052
storage.heo3x.net:2082
storage.heo3x.net:2086
storage.heo3x.net:2095
storage.heo3x.net:443
storage.heo3x.net:2053
storage.heo3x.net:2083
storage.heo3x.net:2087
storage.heo3x.net:2096
storage.heo3x.net:8443
www.storage.heo3x.net:80
www.storage.heo3x.net:22
www.storage.heo3x.net:8080
www.storage.heo3x.net:8880
www.storage.heo3x.net:2052
www.storage.heo3x.net:2082
www.storage.heo3x.net:2086
www.storage.heo3x.net:2095
www.storage.heo3x.net:443
www.storage.heo3x.net:2053
www.storage.heo3x.net:2083
www.storage.heo3x.net:2087
www.storage.heo3x.net:2096
www.storage.heo3x.net:8443
cl0p.storage.heo3x.net:80
cl0p.storage.heo3x.net:22
cl0p.storage.heo3x.net:8080
cl0p.storage.heo3x.net:8880
cl0p.storage.heo3x.net:2052
cl0p.storage.heo3x.net:2082
cl0p.storage.heo3x.net:2086
cl0p.storage.heo3x.net:2095
cl0p.storage.heo3x.net:443
cl0p.storage.heo3x.net:2053
cl0p.storage.heo3x.net:2083
cl0p.storage.heo3x.net:2087
cl0p.storage.heo3x.net:2096
cl0p.storage.heo3x.net:8443
fakeupdates.storage.heo3x.net:80
fakeupdates.storage.heo3x.net:22
fakeupdates.storage.heo3x.net:8080
fakeupdates.storage.heo3x.net:8880
fakeupdates.storage.heo3x.net:2052
fakeupdates.storage.heo3x.net:2082
fakeupdates.storage.heo3x.net:2086
fakeupdates.storage.heo3x.net:2095
fakeupdates.storage.heo3x.net:443
fakeupdates.storage.heo3x.net:2053
fakeupdates.storage.heo3x.net:2083
fakeupdates.storage.heo3x.net:2087
fakeupdates.storage.heo3x.net:2096
fakeupdates.storage.heo3x.net:8443

Mutex

CVaIFbJRL4vi

Attributes

delay
0
install
true
install_file
vrfhof1.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/0x000300000000043e-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1776	vrfhof1.exe
4344	vrfhof1.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
4872	cmd.exe
2100	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	vrfhof1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vrfhof1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
360	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
6020	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
Token: SeDebugPrivilege	1776	vrfhof1.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1324 wrote to memory of 4872	1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe	89
PID 1324 wrote to memory of 2100	1324	89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe	91
PID 4872 wrote to memory of 6020	4872	cmd.exe	93
PID 2100 wrote to memory of 360	2100	cmd.exe	94
PID 2100 wrote to memory of 4344	2100	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe
"C:\Users\Admin\AppData\Local\Temp\89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "vrfhof1" /tr '"C:\Users\Admin\AppData\Roaming\vrfhof1.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "vrfhof1" /tr '"C:\Users\Admin\AppData\Roaming\vrfhof1.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:6020
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9F05.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2100
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:360
- - C:\Users\Admin\AppData\Roaming\vrfhof1.exe
    "C:\Users\Admin\AppData\Roaming\vrfhof1.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4344

C:\Users\Admin\AppData\Roaming\vrfhof1.exe
"C:\Users\Admin\AppData\Roaming\vrfhof1.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1776

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

tmp9F05.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp9F05.tmp.bat
Size 151B
SHA256 838e10cc25bb3b6fe9027c4c5a3a0d49e90d94eac199c5cb63bbce022c1754c5
MD5 38d39fd23fdebb52eef71ff375b687e7
SHA1 0883e0e894bdde569db1ce0cbe26ce31ffe83c84
SHA512 7481ca2ac8df4971ce1c986689fa7730f7316ee49121e672346303d319d2a6c2a2cdb920a8ba3be156437d0230a2d62a5d8e6222c776f7bf72965c7787e1d258
TLSH
T125C08C4261C9AA0E2805145302BAD88C95B268293F40BB809704400D1680888E4EE242
MD5 SHA1 SHA512 TLSH

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vrfhof1.exe

Path C:\Users\Admin\AppData\Roaming\vrfhof1.exe
Size 45KB
SHA256 89e128a5b7e6d16f11bbc437e9a4b3db370bfa141f9da88686aeb9bbc0962292
MD5 f8999df82a093fd8402c31353afdb045
SHA1 da0729c5aa48c163b3dbd7d0d2dc4e8f72149f8e
SHA512 3e72a0ce7ee39246e8501762f1564845912752a3e543b4db065f89a1b37efd410cb6f35eceec09b074ffe765f101e3ea7ee92f1fa77575e23bd5d82f1ecb837e
SSDEEP 768:0uPrpT/LGKeWUszuAmo2q97Iz/yPqiPIIzjbagX3i/BYJJWcoVbBDZ8x:0uPrpT/qY24c5I3bNXS/BKloVNd8x
TLSH
T1B2232A003BE9C127F2BE5F78ADF26105467AF6632A03D68D1CC4119B5613FC68A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1324-0-0x00000000747C2000-0x00000000747C3000-memory.dmp

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memory/1324-1-0x0000000000C00000-0x0000000000C12000-memory.dmp

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memory/1324-2-0x00000000747B0000-0x0000000074F6C000-memory.dmp

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memory/1324-3-0x0000000005670000-0x000000000570C000-memory.dmp

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memory/1324-8-0x00000000747B0000-0x0000000074F6C000-memory.dmp

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memory/1776-12-0x0000000074640000-0x0000000074DFC000-memory.dmp

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memory/1776-14-0x0000000074640000-0x0000000074DFC000-memory.dmp

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