asyncrat | 42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968

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
16/08/2026, 07:33

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General

Target
42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
Size 45KB
Sample260816-jdwgcsseqc
SHA256 42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968
MD5 2f7aeadbe223ab213a7238f4705e09ac
SHA1 95e7f060085a05b7dea654a4933bf173b813dd6f
SHA512 64ff3df1d6adbb9028f969ed52f84c6980d02e5cd199cfd34fea2fcadf8e858bfb1659d6abf9fa7b6db7aa46987b2271707fc1072926cc60346fff2f6adae46f
SSDEEP 768:vuogpT78XvEsWUOsRzqmo2qrrb3/GYjHuPInzjbCXgXNigAP34kP+kLMpT0BDZkx:vuogpT7I62gL/3n3bxX8FItCeCdkx
TLSH
T1E02309003BE8812BF2BE4FB8A8F26145467AF6637603D64D1CC4519B5623FC6DA426FD
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

e.streamforester.name:80
e.streamforester.name:22
e.streamforester.name:8080
e.streamforester.name:8880
e.streamforester.name:2052
e.streamforester.name:2082
e.streamforester.name:2086
e.streamforester.name:2095
e.streamforester.name:443
e.streamforester.name:2053
e.streamforester.name:2083
e.streamforester.name:2087
e.streamforester.name:2096
e.streamforester.name:8443
www.e.streamforester.name:80
www.e.streamforester.name:22
www.e.streamforester.name:8080
www.e.streamforester.name:8880
www.e.streamforester.name:2052
www.e.streamforester.name:2082
www.e.streamforester.name:2086
www.e.streamforester.name:2095
www.e.streamforester.name:443
www.e.streamforester.name:2053
www.e.streamforester.name:2083
www.e.streamforester.name:2087
www.e.streamforester.name:2096
www.e.streamforester.name:8443
clop.e.streamforester.name:80
clop.e.streamforester.name:22
clop.e.streamforester.name:8080
clop.e.streamforester.name:8880
clop.e.streamforester.name:2052
clop.e.streamforester.name:2082
clop.e.streamforester.name:2086
clop.e.streamforester.name:2095
clop.e.streamforester.name:443
clop.e.streamforester.name:2053
clop.e.streamforester.name:2083
clop.e.streamforester.name:2087
clop.e.streamforester.name:2096
clop.e.streamforester.name:8443
remote.e.streamforester.name:80
remote.e.streamforester.name:22
remote.e.streamforester.name:8080
remote.e.streamforester.name:8880
remote.e.streamforester.name:2052
remote.e.streamforester.name:2082
remote.e.streamforester.name:2086
remote.e.streamforester.name:2095
remote.e.streamforester.name:443
remote.e.streamforester.name:2053
remote.e.streamforester.name:2083
remote.e.streamforester.name:2087
remote.e.streamforester.name:2096
remote.e.streamforester.name:8443
darkside.e.streamforester.name:80
darkside.e.streamforester.name:22
darkside.e.streamforester.name:8080
darkside.e.streamforester.name:8880
darkside.e.streamforester.name:2052
darkside.e.streamforester.name:2082
darkside.e.streamforester.name:2086
darkside.e.streamforester.name:2095
darkside.e.streamforester.name:443
darkside.e.streamforester.name:2053
darkside.e.streamforester.name:2083
darkside.e.streamforester.name:2087
darkside.e.streamforester.name:2096
darkside.e.streamforester.name:8443

Mutex

5MF9OLmPuoKH

Attributes

delay
0
install
true
install_file
iwnuiyho.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/0x000e00000001c529-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5440	iwnuiyho.exe
1312	iwnuiyho.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	12	172.67.70.147:22
SSH destination	9	104.26.5.5:22
SSH destination	11	104.26.4.5:22

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
1508	cmd.exe
1244	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	iwnuiyho.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.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	iwnuiyho.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4620	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
2680	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1208 wrote to memory of 1508	1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe	89
PID 1208 wrote to memory of 1244	1208	42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe	90
PID 1508 wrote to memory of 2680	1508	cmd.exe	93
PID 1244 wrote to memory of 4620	1244	cmd.exe	94
PID 1244 wrote to memory of 1312	1244	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe
"C:\Users\Admin\AppData\Local\Temp\42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "iwnuiyho" /tr '"C:\Users\Admin\AppData\Roaming\iwnuiyho.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1508
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "iwnuiyho" /tr '"C:\Users\Admin\AppData\Roaming\iwnuiyho.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2680
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp12E2.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1244
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4620
- - C:\Users\Admin\AppData\Roaming\iwnuiyho.exe
    "C:\Users\Admin\AppData\Roaming\iwnuiyho.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1312

C:\Users\Admin\AppData\Roaming\iwnuiyho.exe
"C:\Users\Admin\AppData\Roaming\iwnuiyho.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:5440

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

tmp12E2.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp12E2.tmp.bat
Size 152B
SHA256 3c215bb2505ecffd862b0d28f00b1475495c99e8b5488fb85b89d9157403dae9
MD5 2c4c7d0305c26fbfc3c60e396659f0cc
SHA1 0396e8371d2a44463363e1c6617ac6979b363773
SHA512 2cbb363f62cc299cd2923abaefed5570c70de7e90c1566c4de9bc1f74991eaaa8545f52491177f34f10ad17f7d02c48d1f78eee117247818fb08d302b0710111
TLSH
T16CC08C8272C5AB1E2909241306BA94CD9166AC5A3F40BB00D70480091680849E0D9342
MD5 SHA1 SHA512 TLSH

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iwnuiyho.exe

Path C:\Users\Admin\AppData\Roaming\iwnuiyho.exe
Size 45KB
SHA256 42bb3bb835fab8e44e3214674b6edc526ad1c96b40a44c8871d25f012ef38968
MD5 2f7aeadbe223ab213a7238f4705e09ac
SHA1 95e7f060085a05b7dea654a4933bf173b813dd6f
SHA512 64ff3df1d6adbb9028f969ed52f84c6980d02e5cd199cfd34fea2fcadf8e858bfb1659d6abf9fa7b6db7aa46987b2271707fc1072926cc60346fff2f6adae46f
SSDEEP 768:vuogpT78XvEsWUOsRzqmo2qrrb3/GYjHuPInzjbCXgXNigAP34kP+kLMpT0BDZkx:vuogpT7I62gL/3n3bxX8FItCeCdkx
TLSH
T1E02309003BE8812BF2BE4FB8A8F26145467AF6637603D64D1CC4519B5623FC6DA426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1208-0-0x0000000074472000-0x0000000074473000-memory.dmp

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memory/1208-1-0x0000000000E10000-0x0000000000E22000-memory.dmp

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memory/1208-2-0x0000000074460000-0x0000000074C1C000-memory.dmp

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memory/1208-3-0x0000000005900000-0x000000000599C000-memory.dmp

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memory/1208-8-0x0000000074460000-0x0000000074C1C000-memory.dmp

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memory/5440-12-0x00000000742F0000-0x0000000074AAC000-memory.dmp

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memory/5440-14-0x00000000742F0000-0x0000000074AAC000-memory.dmp

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