asyncrat | 61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899

Analysis

max time kernel
148s
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
04/08/2026, 16:03

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General

Target
61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
Size 45KB
Sample260804-thsw5sthla
SHA256 61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899
MD5 41caad5438c5a0312d8b61ade7e077a1
SHA1 44a5c776cb6a9f4c1f950a4a9a5e46d625d74dd1
SHA512 5fe0029c3d9dae41e6db3799f86de0df1467af73dd7b088ba1d6fd916e09a2e1a92b0135814c6c7d1ba3c3fd3f377fca38752316cf3343ff6704a5854d6bff1f
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1nfPLyTObvtkjZPIizjb9gXOioHgiwfN8+yUYIBDZUx:cuR0JTPjY2Of2TyyjWi3bqX3oA9mudUx
TLSH
T109233B003BE8812BF2BE4F78A9F26145867AF6637603D54A1CC441DB5A13FC69A436FD
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

maymaykienlong.com:80
maymaykienlong.com:22
maymaykienlong.com:8080
maymaykienlong.com:8880
maymaykienlong.com:2052
maymaykienlong.com:2082
maymaykienlong.com:2086
maymaykienlong.com:2095
maymaykienlong.com:443
maymaykienlong.com:2053
maymaykienlong.com:2083
maymaykienlong.com:2087
maymaykienlong.com:2096
maymaykienlong.com:8443
www.maymaykienlong.com:80
www.maymaykienlong.com:22
www.maymaykienlong.com:8080
www.maymaykienlong.com:8880
www.maymaykienlong.com:2052
www.maymaykienlong.com:2082
www.maymaykienlong.com:2086
www.maymaykienlong.com:2095
www.maymaykienlong.com:443
www.maymaykienlong.com:2053
www.maymaykienlong.com:2083
www.maymaykienlong.com:2087
www.maymaykienlong.com:2096
www.maymaykienlong.com:8443
dridex.maymaykienlong.com:80
dridex.maymaykienlong.com:22
dridex.maymaykienlong.com:8080
dridex.maymaykienlong.com:8880
dridex.maymaykienlong.com:2052
dridex.maymaykienlong.com:2082
dridex.maymaykienlong.com:2086
dridex.maymaykienlong.com:2095
dridex.maymaykienlong.com:443
dridex.maymaykienlong.com:2053
dridex.maymaykienlong.com:2083
dridex.maymaykienlong.com:2087
dridex.maymaykienlong.com:2096
dridex.maymaykienlong.com:8443
malware.maymaykienlong.com:80
malware.maymaykienlong.com:22
malware.maymaykienlong.com:8080
malware.maymaykienlong.com:8880
malware.maymaykienlong.com:2052
malware.maymaykienlong.com:2082
malware.maymaykienlong.com:2086
malware.maymaykienlong.com:2095
malware.maymaykienlong.com:443
malware.maymaykienlong.com:2053
malware.maymaykienlong.com:2083
malware.maymaykienlong.com:2087
malware.maymaykienlong.com:2096
malware.maymaykienlong.com:8443

Mutex

1tbHkR5t0KWM

Attributes

delay
0
install
true
install_file
04sp.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/0x000e00000001c465-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2304	04sp.exe
2508	04sp.exe

Outbound SSH connection to public host 2 TTPs 4 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	11	172.67.191.146:22
SSH destination	15	104.21.84.115:22
SSH destination	16	172.67.191.146:22
SSH destination	9	104.21.84.115:22

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
1712	cmd.exe
1140	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	04sp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	04sp.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4488	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
3760	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3368 wrote to memory of 1712	3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe	89
PID 3368 wrote to memory of 1140	3368	61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe	90
PID 1140 wrote to memory of 4488	1140	cmd.exe	93
PID 1712 wrote to memory of 3760	1712	cmd.exe	94
PID 1140 wrote to memory of 2508	1140	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe
"C:\Users\Admin\AppData\Local\Temp\61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "04sp" /tr '"C:\Users\Admin\AppData\Roaming\04sp.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "04sp" /tr '"C:\Users\Admin\AppData\Roaming\04sp.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3760
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp46E3.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1140
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4488
- - C:\Users\Admin\AppData\Roaming\04sp.exe
    "C:\Users\Admin\AppData\Roaming\04sp.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2508

C:\Users\Admin\AppData\Roaming\04sp.exe
"C:\Users\Admin\AppData\Roaming\04sp.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2304

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

tmp46E3.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp46E3.tmp.bat
Size 148B
SHA256 9f76f92b0b8593af822a65c4e3354d92c08c2c96842d4bb0aa1f32b199fc34a0
MD5 22ebee00eda23022527232f399f78c86
SHA1 91d0072b7c9f50a8d6c1391af3d60914ab3a9b22
SHA512 70c78e03585b02967727b04d9fa2cc6839bb3aa1299263bbb20ab79a0d95e6873420d2699d47ce1afe706dab4692b1aab63bc4266748699bceeb3f301627f3cb
TLSH
T1E8C02B4262C5EB0F2805781316FAD58C91727C593F40BB10D744404D1380898F4D9341
MD5 SHA1 SHA512 TLSH

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04sp.exe

Path C:\Users\Admin\AppData\Roaming\04sp.exe
Size 45KB
SHA256 61b8f06c63d81e9ea62f4015b43739d02ace97d39486671cc0865d10e83c3899
MD5 41caad5438c5a0312d8b61ade7e077a1
SHA1 44a5c776cb6a9f4c1f950a4a9a5e46d625d74dd1
SHA512 5fe0029c3d9dae41e6db3799f86de0df1467af73dd7b088ba1d6fd916e09a2e1a92b0135814c6c7d1ba3c3fd3f377fca38752316cf3343ff6704a5854d6bff1f
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1nfPLyTObvtkjZPIizjb9gXOioHgiwfN8+yUYIBDZUx:cuR0JTPjY2Of2TyyjWi3bqX3oA9mudUx
TLSH
T109233B003BE8812BF2BE4F78A9F26145867AF6637603D54A1CC441DB5A13FC69A436FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2304-12-0x00000000747E0000-0x0000000074F9C000-memory.dmp

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memory/2304-14-0x00000000747E0000-0x0000000074F9C000-memory.dmp

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memory/3368-0-0x0000000074962000-0x0000000074963000-memory.dmp

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memory/3368-1-0x0000000000BD0000-0x0000000000BE2000-memory.dmp

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memory/3368-2-0x0000000074950000-0x000000007510C000-memory.dmp

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memory/3368-3-0x0000000005740000-0x00000000057DC000-memory.dmp

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memory/3368-8-0x0000000074950000-0x000000007510C000-memory.dmp

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