asyncrat | b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f

Analysis

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

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
03/08/2026, 20:01

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General

Target
b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
Size 45KB
Sample260803-yrpcjazthv
SHA256 b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f
MD5 0b0a17d7b8e827051ddfe6c5d4c9df7b
SHA1 2084b32e8ef4ca940d7fb56e34b0ef172abe1d53
SHA512 bf3073a5d9d64b36b6d26cb5360fdfd80537a15ebfe73e93b853ca27f3b81f7df00178220861b52257aa45de375e9ca1b3e7c4c827541849b19d26eebd8c1378
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9IDEbHBqj2OPI/pzjbqgX3i8RvWICL0IlkBDZ8x:0u1YJTHcw2HyoK3/p3b9XS4RCflSd8x
TLSH
T108231B003BE8C63BF27E4FB8A8F26145867AF6632A03D5491CC452D75613FC69A426FD
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

cwlottery.com:80
cwlottery.com:22
cwlottery.com:8080
cwlottery.com:8880
cwlottery.com:2052
cwlottery.com:2082
cwlottery.com:2086
cwlottery.com:2095
cwlottery.com:443
cwlottery.com:2053
cwlottery.com:2083
cwlottery.com:2087
cwlottery.com:2096
cwlottery.com:8443
www.cwlottery.com:80
www.cwlottery.com:22
www.cwlottery.com:8080
www.cwlottery.com:8880
www.cwlottery.com:2052
www.cwlottery.com:2082
www.cwlottery.com:2086
www.cwlottery.com:2095
www.cwlottery.com:443
www.cwlottery.com:2053
www.cwlottery.com:2083
www.cwlottery.com:2087
www.cwlottery.com:2096
www.cwlottery.com:8443
remcos.cwlottery.com:80
remcos.cwlottery.com:22
remcos.cwlottery.com:8080
remcos.cwlottery.com:8880
remcos.cwlottery.com:2052
remcos.cwlottery.com:2082
remcos.cwlottery.com:2086
remcos.cwlottery.com:2095
remcos.cwlottery.com:443
remcos.cwlottery.com:2053
remcos.cwlottery.com:2083
remcos.cwlottery.com:2087
remcos.cwlottery.com:2096
remcos.cwlottery.com:8443
malware.cwlottery.com:80
malware.cwlottery.com:22
malware.cwlottery.com:8080
malware.cwlottery.com:8880
malware.cwlottery.com:2052
malware.cwlottery.com:2082
malware.cwlottery.com:2086
malware.cwlottery.com:2095
malware.cwlottery.com:443
malware.cwlottery.com:2053
malware.cwlottery.com:2083
malware.cwlottery.com:2087
malware.cwlottery.com:2096
malware.cwlottery.com:8443
rat.cwlottery.com:80
rat.cwlottery.com:22
rat.cwlottery.com:8080
rat.cwlottery.com:8880
rat.cwlottery.com:2052
rat.cwlottery.com:2082
rat.cwlottery.com:2086
rat.cwlottery.com:2095
rat.cwlottery.com:443
rat.cwlottery.com:2053
rat.cwlottery.com:2083
rat.cwlottery.com:2087
rat.cwlottery.com:2096
rat.cwlottery.com:8443

Mutex

6RGcXZVGGrhW

Attributes

delay
0
install
true
install_file
9u66cu.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/0x000e00000001c51e-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4608	9u66cu.exe
4220	9u66cu.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	21	104.21.17.180:22
SSH destination	22	172.67.177.192:22
SSH destination	29	104.21.17.180:22

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
2628	cmd.exe
5064	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9u66cu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9u66cu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2852	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
2260	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
Token: SeDebugPrivilege	4608	9u66cu.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3204 wrote to memory of 2628	3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe	89
PID 3204 wrote to memory of 5064	3204	b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe	90
PID 2628 wrote to memory of 2260	2628	cmd.exe	93
PID 5064 wrote to memory of 2852	5064	cmd.exe	94
PID 5064 wrote to memory of 4220	5064	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe
"C:\Users\Admin\AppData\Local\Temp\b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "9u66cu" /tr '"C:\Users\Admin\AppData\Roaming\9u66cu.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2628
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "9u66cu" /tr '"C:\Users\Admin\AppData\Roaming\9u66cu.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2260
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5337.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5064
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2852
- - C:\Users\Admin\AppData\Roaming\9u66cu.exe
    "C:\Users\Admin\AppData\Roaming\9u66cu.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4220

C:\Users\Admin\AppData\Roaming\9u66cu.exe
"C:\Users\Admin\AppData\Roaming\9u66cu.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4608

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

tmp5337.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5337.tmp.bat
Size 150B
SHA256 3e0b521412ea4e094926376824a0d5d7fec79817c90d167461cf0c25339811d4
MD5 986fbd26f5c7c9df20d2ad1cddb9b990
SHA1 e63a81e7153c008f84593b1b7a6a6688b977bf94
SHA512 e22413356c8a9c84b4fe3f91abb317377daeb1ecd4e3aae6ae578dac921b75ca3092bde5609e866e87c61901037b5f81839a2df066f260d52439c1ceec6e87f4
TLSH
T17AC02B4251C7EA0E6805185313FAED8D92736D3A3F80FB20C308800ED280889F0DE345
MD5 SHA1 SHA512 TLSH

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9u66cu.exe

Path C:\Users\Admin\AppData\Roaming\9u66cu.exe
Size 45KB
SHA256 b6d61342545c6d6673e21453d19b710b3e58a663a1c43730a3c278fc34ca621f
MD5 0b0a17d7b8e827051ddfe6c5d4c9df7b
SHA1 2084b32e8ef4ca940d7fb56e34b0ef172abe1d53
SHA512 bf3073a5d9d64b36b6d26cb5360fdfd80537a15ebfe73e93b853ca27f3b81f7df00178220861b52257aa45de375e9ca1b3e7c4c827541849b19d26eebd8c1378
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9IDEbHBqj2OPI/pzjbqgX3i8RvWICL0IlkBDZ8x:0u1YJTHcw2HyoK3/p3b9XS4RCflSd8x
TLSH
T108231B003BE8C63BF27E4FB8A8F26145867AF6632A03D5491CC452D75613FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3204-0-0x0000000074312000-0x0000000074313000-memory.dmp

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memory/3204-1-0x00000000005D0000-0x00000000005E2000-memory.dmp

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memory/3204-2-0x0000000074300000-0x0000000074ABC000-memory.dmp

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memory/3204-3-0x0000000005100000-0x000000000519C000-memory.dmp

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memory/3204-8-0x0000000074300000-0x0000000074ABC000-memory.dmp

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memory/4608-12-0x0000000074190000-0x000000007494C000-memory.dmp

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memory/4608-14-0x0000000074190000-0x000000007494C000-memory.dmp

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