asyncrat | b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15

Analysis

max time kernel
150s
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, 12:44

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General

Target
b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
Size 45KB
Sample260804-pyyeca1bqd
SHA256 b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15
MD5 287c23e118a0a1cbe256c111bd1a6ed3
SHA1 b553f165a16447b68438af4ffafac3bb4173573c
SHA512 7410df274aace8d97120f7bfbac866f9cb1275314c111c4dc29ef74948fc5835a1df9fede8bd4516ca70eeabd215e40fe266c4ae4b189d558faaad3a23025aa9
SSDEEP 768:cu7m/5THrq+CWUoDuMmo2qFV3HE4eVoOPIGjzjbWg53infeA40Uaqr6WPBDZUx:cu7e5TH2A2EU1o3Gj3bJ5Snr40UZ5dUx
TLSH
T1FB233A003BE8822BF2BE4F7899F26145467AF6A37603D54A1CC451DB5713BC6CA426FE
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

sextin.org:80
sextin.org:22
sextin.org:8080
sextin.org:8880
sextin.org:2052
sextin.org:2082
sextin.org:2086
sextin.org:2095
sextin.org:443
sextin.org:2053
sextin.org:2083
sextin.org:2087
sextin.org:2096
sextin.org:8443
www.sextin.org:80
www.sextin.org:22
www.sextin.org:8080
www.sextin.org:8880
www.sextin.org:2052
www.sextin.org:2082
www.sextin.org:2086
www.sextin.org:2095
www.sextin.org:443
www.sextin.org:2053
www.sextin.org:2083
www.sextin.org:2087
www.sextin.org:2096
www.sextin.org:8443
malware.sextin.org:80
malware.sextin.org:22
malware.sextin.org:8080
malware.sextin.org:8880
malware.sextin.org:2052
malware.sextin.org:2082
malware.sextin.org:2086
malware.sextin.org:2095
malware.sextin.org:443
malware.sextin.org:2053
malware.sextin.org:2083
malware.sextin.org:2087
malware.sextin.org:2096
malware.sextin.org:8443
connect.sextin.org:80
connect.sextin.org:22
connect.sextin.org:8080
connect.sextin.org:8880
connect.sextin.org:2052
connect.sextin.org:2082
connect.sextin.org:2086
connect.sextin.org:2095
connect.sextin.org:443
connect.sextin.org:2053
connect.sextin.org:2083
connect.sextin.org:2087
connect.sextin.org:2096
connect.sextin.org:8443
invasive.sextin.org:80
invasive.sextin.org:22
invasive.sextin.org:8080
invasive.sextin.org:8880
invasive.sextin.org:2052
invasive.sextin.org:2082
invasive.sextin.org:2086
invasive.sextin.org:2095
invasive.sextin.org:443
invasive.sextin.org:2053
invasive.sextin.org:2083
invasive.sextin.org:2087
invasive.sextin.org:2096
invasive.sextin.org:8443

Mutex

CDTTTAJF7KbS

Attributes

delay
0
install
true
install_file
di84m.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/0x001500000001c3b2-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5500	di84m.exe
5324	di84m.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	7	172.67.195.161:22
SSH destination	8	104.21.12.195:22
SSH destination	11	172.67.195.161:22
SSH destination	12	104.21.12.195:22

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
3576	cmd.exe
4788	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	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.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	di84m.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	di84m.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4724	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
4376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
Token: SeDebugPrivilege	5500	di84m.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 3576	1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe	89
PID 1536 wrote to memory of 4788	1536	b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe	91
PID 4788 wrote to memory of 4724	4788	cmd.exe	93
PID 3576 wrote to memory of 4376	3576	cmd.exe	94
PID 4788 wrote to memory of 5324	4788	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe
"C:\Users\Admin\AppData\Local\Temp\b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "di84m" /tr '"C:\Users\Admin\AppData\Roaming\di84m.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3576
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "di84m" /tr '"C:\Users\Admin\AppData\Roaming\di84m.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4376
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpFE12.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4788
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4724
- - C:\Users\Admin\AppData\Roaming\di84m.exe
    "C:\Users\Admin\AppData\Roaming\di84m.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5324

C:\Users\Admin\AppData\Roaming\di84m.exe
"C:\Users\Admin\AppData\Roaming\di84m.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5500

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

tmpFE12.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpFE12.tmp.bat
Size 149B
SHA256 cf2adf0c2d379f2acc48f0640a86ecc071b980a8e150c6614c45c4a53e0e1456
MD5 296fc2792bde859d0b41fb3f6c317462
SHA1 3a9d1383622ab34ee7891add028d66cf691e4a83
SHA512 427408af7687e159d00afbfbdad6ef17e05dd51d42f5096d3231443c77d192bdce92be0896cfe7b9f39adf96f0b4b63eb62cb0aef3a5ecbe558feb00912618ae
TLSH
T163C08C9395C5EA0E680D14130ABAE49D9166B86A3E44AF008B0444091280448F099282
MD5 SHA1 SHA512 TLSH

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di84m.exe

Path C:\Users\Admin\AppData\Roaming\di84m.exe
Size 45KB
SHA256 b1e9c39f0020218ecf4a2c854e7b74fbdd0c13e6a0c820503248ed2af909bc15
MD5 287c23e118a0a1cbe256c111bd1a6ed3
SHA1 b553f165a16447b68438af4ffafac3bb4173573c
SHA512 7410df274aace8d97120f7bfbac866f9cb1275314c111c4dc29ef74948fc5835a1df9fede8bd4516ca70eeabd215e40fe266c4ae4b189d558faaad3a23025aa9
SSDEEP 768:cu7m/5THrq+CWUoDuMmo2qFV3HE4eVoOPIGjzjbWg53infeA40Uaqr6WPBDZUx:cu7e5TH2A2EU1o3Gj3bJ5Snr40UZ5dUx
TLSH
T1FB233A003BE8822BF2BE4F7899F26145467AF6A37603D54A1CC451DB5713BC6CA426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1536-0-0x0000000074DD2000-0x0000000074DD3000-memory.dmp

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memory/1536-1-0x0000000000CD0000-0x0000000000CE2000-memory.dmp

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memory/1536-2-0x0000000074DC0000-0x000000007557C000-memory.dmp

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memory/1536-3-0x0000000003360000-0x00000000033FC000-memory.dmp

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memory/1536-8-0x0000000074DC0000-0x000000007557C000-memory.dmp

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memory/5500-12-0x0000000074C50000-0x000000007540C000-memory.dmp

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memory/5500-14-0x0000000074C50000-0x000000007540C000-memory.dmp

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