asyncrat | 8cc100f5244959080248bea725ff89ca3fe9b95b3b0b243c0ddec7ce078e36c6

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
12/09/2026, 10:19

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General

Target
coapsdk.exe
Size 45KB
Sample260912-mcm1daer71
SHA256 8cc100f5244959080248bea725ff89ca3fe9b95b3b0b243c0ddec7ce078e36c6
MD5 5f2d35c2bb2de86b4c888cf59a83dc11
SHA1 397fcba0d609401710c559845573313a888e65bb
SHA512 94a0832f449aca88c84d9e11cbe1a014d96ef292dd836e17714cc72344c7130e2b53b6f657466db7396a85ef5bdaa9bce4e71b971f5b3403d7ac4aa105e3a499
SSDEEP 768:yuKR9TH4EjZWUR/ejmo2qrF9wSkq/z1OPIozjb/gu3i1SxQJRxw1PkeBGBDZ7x:yuKR9THfe26iVK3o3bIuS0WJHgPk0Id1
TLSH
T1D6231A0037E9C22BF2BE5F7899F26105867AF2673603D64A2CC451DB5713BC29A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

admin command_and_control defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Admin

phimsexz.pro:80
phimsexz.pro:443
phimsexz.pro:7788
phimsexz.pro:7879
phimsexz.pro:3577
phimsexz.pro:8888
phimsexz.pro:3306
phimsexz.pro:21
phimsexz.pro:22
www.phimsexz.pro:80
www.phimsexz.pro:443
www.phimsexz.pro:7788
www.phimsexz.pro:7879
www.phimsexz.pro:3577
www.phimsexz.pro:8888
www.phimsexz.pro:3306
www.phimsexz.pro:21
www.phimsexz.pro:22

Mutex

Y9Mpv2UviD7u

Attributes

delay
3
install
true
install_file
coapsdk.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/0x000e00000001c4e0-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5948	coapsdk.exe
1160	coapsdk.exe

Outbound SSH connection to public host 2 TTPs 5 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	pid	Process
SSH destination	2	5.61.208.88:22	5948	coapsdk.exe
SSH destination	6	5.61.208.88:22		Process not Found
SSH destination	9	5.61.208.88:22		Process not Found
SSH destination	14	5.61.208.88:22		Process not Found
SSH destination	18	5.61.208.88:22		Process not Found

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
4372	cmd.exe
5528	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	coapsdk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	coapsdk.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	coapsdk.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4788	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
5084	schtasks.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe
3916	coapsdk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3916	coapsdk.exe
Token: SeDebugPrivilege	5948	coapsdk.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3916 wrote to memory of 5528	3916	coapsdk.exe	86
PID 3916 wrote to memory of 4372	3916	coapsdk.exe	88
PID 5528 wrote to memory of 5084	5528	cmd.exe	90
PID 4372 wrote to memory of 4788	4372	cmd.exe	91
PID 4372 wrote to memory of 1160	4372	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\coapsdk.exe
"C:\Users\Admin\AppData\Local\Temp\coapsdk.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "coapsdk" /tr '"C:\Users\Admin\AppData\Roaming\coapsdk.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5528
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "coapsdk" /tr '"C:\Users\Admin\AppData\Roaming\coapsdk.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5084
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp45B5.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4372
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4788
- - C:\Users\Admin\AppData\Roaming\coapsdk.exe
    "C:\Users\Admin\AppData\Roaming\coapsdk.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:1160

C:\Users\Admin\AppData\Roaming\coapsdk.exe
"C:\Users\Admin\AppData\Roaming\coapsdk.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5948

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

tmp45B5.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp45B5.tmp.bat
Size 151B
SHA256 5dc5e44da5e87ec9f5107b69853340c2653231e2a795f90da0e803320031b78e
MD5 84afd69290694d59f157f85dd466b9a3
SHA1 bd8bee25aea3450bcc93aeedd4fb3c4dda7e6888
SHA512 ca058bbe2a20e3cd06a017c589cc97e898d1e9729e49174f121e1a04c00ec9da02e52110266d244c409660266a47f8e95ab7984a96a7024619e7db6c1150c273
TLSH
T190C08C8251CAAA1E680A646302BAD98EA172682D3E80AB209384404A1280888F599286
MD5 SHA1 SHA512 TLSH

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coapsdk.exe

Path C:\Users\Admin\AppData\Roaming\coapsdk.exe
Size 45KB
SHA256 8cc100f5244959080248bea725ff89ca3fe9b95b3b0b243c0ddec7ce078e36c6
MD5 5f2d35c2bb2de86b4c888cf59a83dc11
SHA1 397fcba0d609401710c559845573313a888e65bb
SHA512 94a0832f449aca88c84d9e11cbe1a014d96ef292dd836e17714cc72344c7130e2b53b6f657466db7396a85ef5bdaa9bce4e71b971f5b3403d7ac4aa105e3a499
SSDEEP 768:yuKR9TH4EjZWUR/ejmo2qrF9wSkq/z1OPIozjb/gu3i1SxQJRxw1PkeBGBDZ7x:yuKR9THfe26iVK3o3bIuS0WJHgPk0Id1
TLSH
T1D6231A0037E9C22BF2BE5F7899F26105867AF2673603D64A2CC451DB5713BC29A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3916-0-0x00000000744F2000-0x00000000744F3000-memory.dmp

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memory/3916-1-0x00000000008A0000-0x00000000008B2000-memory.dmp

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memory/3916-2-0x00000000744E0000-0x0000000074C9C000-memory.dmp

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memory/3916-3-0x0000000005390000-0x000000000542C000-memory.dmp

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memory/3916-9-0x00000000744E0000-0x0000000074C9C000-memory.dmp

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memory/5948-12-0x00000000744E0000-0x0000000074C9C000-memory.dmp

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memory/5948-14-0x00000000744E0000-0x0000000074C9C000-memory.dmp

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