asyncrat | 43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a

Analysis

max time kernel
148s
max time network
143s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/08/2026, 06:22

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General

Target
43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
Size 45KB
Sample260802-g5c3zsec75
SHA256 43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a
MD5 35ac494797f039b0598616ca82b1a64b
SHA1 fe71aeac36a97114520b67c38bad0941dec18bdc
SHA512 26297d0808c55ce3dc003d759636c93931b29a15b91e30fff168d4399ef1d5982d44c9e0607526a8fdcf344c256a67e1c84d89f9eae21a7b3a95f87d103d5bed
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVrT2Qpm7PIGHjbIgX3ihcrpVaa4BDZkx:suJdpTPdI2JeGDbfXShypsa+dkx
TLSH
T12B232C003BE8823BF2BE4F789CF26145867AE5637603D54D2CC452DB5623FC68A526ED
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

phimvkl.com:80
phimvkl.com:22
phimvkl.com:8080
phimvkl.com:8880
phimvkl.com:2052
phimvkl.com:2082
phimvkl.com:2086
phimvkl.com:2095
phimvkl.com:443
phimvkl.com:2053
phimvkl.com:2083
phimvkl.com:2087
phimvkl.com:2096
phimvkl.com:8443
www.phimvkl.com:80
www.phimvkl.com:22
www.phimvkl.com:8080
www.phimvkl.com:8880
www.phimvkl.com:2052
www.phimvkl.com:2082
www.phimvkl.com:2086
www.phimvkl.com:2095
www.phimvkl.com:443
www.phimvkl.com:2053
www.phimvkl.com:2083
www.phimvkl.com:2087
www.phimvkl.com:2096
www.phimvkl.com:8443
darkside.phimvkl.com:80
darkside.phimvkl.com:22
darkside.phimvkl.com:8080
darkside.phimvkl.com:8880
darkside.phimvkl.com:2052
darkside.phimvkl.com:2082
darkside.phimvkl.com:2086
darkside.phimvkl.com:2095
darkside.phimvkl.com:443
darkside.phimvkl.com:2053
darkside.phimvkl.com:2083
darkside.phimvkl.com:2087
darkside.phimvkl.com:2096
darkside.phimvkl.com:8443
nanocore.phimvkl.com:80
nanocore.phimvkl.com:22
nanocore.phimvkl.com:8080
nanocore.phimvkl.com:8880
nanocore.phimvkl.com:2052
nanocore.phimvkl.com:2082
nanocore.phimvkl.com:2086
nanocore.phimvkl.com:2095
nanocore.phimvkl.com:443
nanocore.phimvkl.com:2053
nanocore.phimvkl.com:2083
nanocore.phimvkl.com:2087
nanocore.phimvkl.com:2096
nanocore.phimvkl.com:8443
malware.phimvkl.com:80
malware.phimvkl.com:22
malware.phimvkl.com:8080
malware.phimvkl.com:8880
malware.phimvkl.com:2052
malware.phimvkl.com:2082
malware.phimvkl.com:2086
malware.phimvkl.com:2095
malware.phimvkl.com:443
malware.phimvkl.com:2053
malware.phimvkl.com:2083
malware.phimvkl.com:2087
malware.phimvkl.com:2096
malware.phimvkl.com:8443

Mutex

Nm09TnBX6Y4m

Attributes

delay
0
install
true
install_file
b76uu856.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/0x000d00000001c55c-10.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
260	b76uu856.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	13	104.26.8.243:22
SSH destination	14	172.67.69.53:22
SSH destination	16	104.26.9.243:22

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
2564	cmd.exe
1424	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.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	b76uu856.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2660	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
4804	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3340 wrote to memory of 1424	3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe	89
PID 3340 wrote to memory of 2564	3340	43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe	90
PID 1424 wrote to memory of 4804	1424	cmd.exe	93
PID 2564 wrote to memory of 2660	2564	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe
"C:\Users\Admin\AppData\Local\Temp\43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "b76uu856" /tr '"C:\Users\Admin\AppData\Roaming\b76uu856.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1424
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "b76uu856" /tr '"C:\Users\Admin\AppData\Roaming\b76uu856.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4804
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3A31.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2564
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2660
- - C:\Users\Admin\AppData\Roaming\b76uu856.exe
    "C:\Users\Admin\AppData\Roaming\b76uu856.exe"
    3⤵
    PID:5896

C:\Users\Admin\AppData\Roaming\b76uu856.exe
"C:\Users\Admin\AppData\Roaming\b76uu856.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:260

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

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Downloads

tmp3A31.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp3A31.tmp.bat
Size 152B
SHA256 e5a54a0feac17f11aa0dc35207400a53b77db9077b2a7bb45119a7a5c86f4ad2
MD5 11296ade14598b9a86c9a75557a0287a
SHA1 ba0fce744d3796e0d9a259dc3f97e9e2778964f7
SHA512 3a9919e1c2cfd5ad8796ad495436bd4ab9d1026f864693f541f879dad682e71913d5fd9b712b599760a12510882f666990907fd607bffd44d1890730af49f197
TLSH
T147C02B4295C5EF6E6C0524A303FBE48CB273AC5A3F40BB00D708805E228184DF4DD786
MD5 SHA1 SHA512 TLSH

Submit Download

b76uu856.exe

Path C:\Users\Admin\AppData\Roaming\b76uu856.exe
Size 45KB
SHA256 43be408455a960968f05a91b1fb2210783f03508b4729e7e5446547b3c868b1a
MD5 35ac494797f039b0598616ca82b1a64b
SHA1 fe71aeac36a97114520b67c38bad0941dec18bdc
SHA512 26297d0808c55ce3dc003d759636c93931b29a15b91e30fff168d4399ef1d5982d44c9e0607526a8fdcf344c256a67e1c84d89f9eae21a7b3a95f87d103d5bed
SSDEEP 768:suJdpTP3tcsWUODmqmo2qVrT2Qpm7PIGHjbIgX3ihcrpVaa4BDZkx:suJdpTPdI2JeGDbfXShypsa+dkx
TLSH
T12B232C003BE8823BF2BE4F789CF26145867AE5637603D54D2CC452DB5623FC68A526ED
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/260-12-0x0000000074C70000-0x000000007542C000-memory.dmp

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memory/260-14-0x0000000074C70000-0x000000007542C000-memory.dmp

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memory/3340-0-0x0000000074DF2000-0x0000000074DF3000-memory.dmp

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memory/3340-1-0x0000000000BA0000-0x0000000000BB2000-memory.dmp

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memory/3340-2-0x0000000074DE0000-0x000000007559C000-memory.dmp

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memory/3340-3-0x00000000056A0000-0x000000000573C000-memory.dmp

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memory/3340-8-0x0000000074DE0000-0x000000007559C000-memory.dmp

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