asyncrat | 41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1

Analysis

max time kernel
148s
max time network
152s
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, 14:36

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General

Target
41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
Size 45KB
Sample260804-ryzcracd36
SHA256 41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1
MD5 25e9bc618ffe93a9fea3c0f0cf19533d
SHA1 62fad0e52dc2eb151b57ab2393ecc52af3ff946f
SHA512 3c3fb51943a14888b6a8a97a954bb041662b3687589217b934b66c0e4211ebde8b2f765cd92f88ad37f86a459ffd238aba2a72a20803b0b9d951de72d7881991
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2ql32uXueM+DX8vnPIMwzjbIgX3yNfA6yHXwnLCBDo:wuDWZTpMZSB2DuznDXiAMw3bfXCkXwY8
TLSH
T1F5233B103BE9812BF1BF4F78A9F26145867AF2732603D54A1CC452D75623FC68A42AFD
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

sexybeam.me:80
sexybeam.me:22
sexybeam.me:8080
sexybeam.me:8880
sexybeam.me:2052
sexybeam.me:2082
sexybeam.me:2086
sexybeam.me:2095
sexybeam.me:443
sexybeam.me:2053
sexybeam.me:2083
sexybeam.me:2087
sexybeam.me:2096
sexybeam.me:8443
www.sexybeam.me:80
www.sexybeam.me:22
www.sexybeam.me:8080
www.sexybeam.me:8880
www.sexybeam.me:2052
www.sexybeam.me:2082
www.sexybeam.me:2086
www.sexybeam.me:2095
www.sexybeam.me:443
www.sexybeam.me:2053
www.sexybeam.me:2083
www.sexybeam.me:2087
www.sexybeam.me:2096
www.sexybeam.me:8443
lokibot.sexybeam.me:80
lokibot.sexybeam.me:22
lokibot.sexybeam.me:8080
lokibot.sexybeam.me:8880
lokibot.sexybeam.me:2052
lokibot.sexybeam.me:2082
lokibot.sexybeam.me:2086
lokibot.sexybeam.me:2095
lokibot.sexybeam.me:443
lokibot.sexybeam.me:2053
lokibot.sexybeam.me:2083
lokibot.sexybeam.me:2087
lokibot.sexybeam.me:2096
lokibot.sexybeam.me:8443
iloveyou.sexybeam.me:80
iloveyou.sexybeam.me:22
iloveyou.sexybeam.me:8080
iloveyou.sexybeam.me:8880
iloveyou.sexybeam.me:2052
iloveyou.sexybeam.me:2082
iloveyou.sexybeam.me:2086
iloveyou.sexybeam.me:2095
iloveyou.sexybeam.me:443
iloveyou.sexybeam.me:2053
iloveyou.sexybeam.me:2083
iloveyou.sexybeam.me:2087
iloveyou.sexybeam.me:2096
iloveyou.sexybeam.me:8443

Mutex

KYXphlyU1XO1

Attributes

delay
0
install
true
install_file
ezfrs.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/0x000d00000001c618-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3460	ezfrs.exe
4124	ezfrs.exe

Outbound SSH connection to public host 2 TTPs 1 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	103.131.57.45:22

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
1412	cmd.exe
3644	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	ezfrs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ezfrs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.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
836	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
6496	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
Token: SeDebugPrivilege	3460	ezfrs.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 6856 wrote to memory of 1412	6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe	90
PID 6856 wrote to memory of 3644	6856	41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe	92
PID 1412 wrote to memory of 6496	1412	cmd.exe	94
PID 3644 wrote to memory of 836	3644	cmd.exe	95
PID 3644 wrote to memory of 4124	3644	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe
"C:\Users\Admin\AppData\Local\Temp\41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:6856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ezfrs" /tr '"C:\Users\Admin\AppData\Roaming\ezfrs.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1412
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ezfrs" /tr '"C:\Users\Admin\AppData\Roaming\ezfrs.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:6496
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4DF7.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3644
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:836
- - C:\Users\Admin\AppData\Roaming\ezfrs.exe
    "C:\Users\Admin\AppData\Roaming\ezfrs.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4124

C:\Users\Admin\AppData\Roaming\ezfrs.exe
"C:\Users\Admin\AppData\Roaming\ezfrs.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3460

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

tmp4DF7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp4DF7.tmp.bat
Size 149B
SHA256 823a7d37e4693ab005e6b615eac71ba9f10e67b338e60ab0b86582f22d9f7127
MD5 68d2f7f0603aebe514ec0042e610e02e
SHA1 d69884c1870efc6d99d8ac089d5a42abd2d6c556
SHA512 2ba25e0c102eaf1a2cf20c21ff97cbc21469d8b7afb936f1043fc57893ca01d19484dc82bd7ac9e3b5a848acd0ba55fa6068337c35c23bbbaba0e9ad4633d544
TLSH
T133C02B4251C5EE0F2C0624733AFAD9CC92B66D1A3F40BB40D304415E12C048CF0D93C5
MD5 SHA1 SHA512 TLSH

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ezfrs.exe

Path C:\Users\Admin\AppData\Roaming\ezfrs.exe
Size 45KB
SHA256 41dfba7479353145dc592fb772e1ec56ad3862433e5237fb4977cd0512b728b1
MD5 25e9bc618ffe93a9fea3c0f0cf19533d
SHA1 62fad0e52dc2eb151b57ab2393ecc52af3ff946f
SHA512 3c3fb51943a14888b6a8a97a954bb041662b3687589217b934b66c0e4211ebde8b2f765cd92f88ad37f86a459ffd238aba2a72a20803b0b9d951de72d7881991
SSDEEP 768:wuDWZTpw7bmaWUg3gSk0mo2ql32uXueM+DX8vnPIMwzjbIgX3yNfA6yHXwnLCBDo:wuDWZTpMZSB2DuznDXiAMw3bfXCkXwY8
TLSH
T1F5233B103BE9812BF1BF4F78A9F26145867AF2732603D54A1CC452D75623FC68A42AFD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3460-12-0x0000000074710000-0x0000000074ECC000-memory.dmp

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memory/3460-14-0x0000000074710000-0x0000000074ECC000-memory.dmp

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memory/6856-0-0x0000000074722000-0x0000000074723000-memory.dmp

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memory/6856-1-0x0000000000B10000-0x0000000000B22000-memory.dmp

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memory/6856-2-0x0000000074710000-0x0000000074ECC000-memory.dmp

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memory/6856-3-0x0000000005660000-0x00000000056FC000-memory.dmp

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memory/6856-8-0x0000000074710000-0x0000000074ECC000-memory.dmp

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