asyncrat | 9a567dd914498730abc22256f066f7db3f16d859febab7f4542c1c5c771d8bb7

Analysis

max time kernel
148s
max time network
144s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
04/11/2026, 18:46

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General

Target
upgrade.exe
Size 112KB
Sample261104-xe2lnay13q
SHA256 9a567dd914498730abc22256f066f7db3f16d859febab7f4542c1c5c771d8bb7
MD5 944fcb4dbe6e15ab74c3416715dadc34
SHA1 6a89cbe282af71a8ca40fc11fe94b7b0ccf03643
SHA512 40d0d6df2e3194f3ee20d98b5572cd30be37e6834424fcf0f5dd628318fa14933992aa6b86438c33452b9327c45802767c5305dc86680d28a15f981f2b4c7398
SSDEEP 1536:7uTO9TgQCv2IK0efbDXSctkBSKd6tKrqi35Rwa3:7uTaTg7v2r0efbD/tmFpPwa3
TLSH
T1B8B39F30EFD7B036ED6E0AFC5CA37171492565D3250EF57AFCC0329746226C1A9326A9
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

789bet.core.ru.com:443
789bet.core.ru.com:80
789bet.core.ru.com:22
789bet.core.ru.com:3306
789bet.core.ru.com:21
789bet.core.ru.com:5900
admin.789bet.core.ru.com:443
admin.789bet.core.ru.com:80
admin.789bet.core.ru.com:22
admin.789bet.core.ru.com:3306
admin.789bet.core.ru.com:21
admin.789bet.core.ru.com:5900
www.789bet.core.ru.com:443
www.789bet.core.ru.com:80
www.789bet.core.ru.com:22
www.789bet.core.ru.com:3306
www.789bet.core.ru.com:21
www.789bet.core.ru.com:5900

Mutex

EF0gYFI37SPA

Attributes

delay
3
install
true
install_file
upgrade.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/0x00030000000170c6-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3460	upgrade.exe
4060	upgrade.exe

Outbound SSH connection to public host 2 TTPs 2 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	104.21.14.81:22
SSH destination	13	172.67.202.170:22

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
764	cmd.exe
5352	cmd.exe

Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	upgrade.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	upgrade.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	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	upgrade.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	upgrade.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	upgrade.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2568	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
5364	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe
4960	upgrade.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4960	upgrade.exe
Token: SeDebugPrivilege	3460	upgrade.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 764	4960	upgrade.exe	89
PID 4960 wrote to memory of 5352	4960	upgrade.exe	91
PID 764 wrote to memory of 5364	764	cmd.exe	93
PID 5352 wrote to memory of 2568	5352	cmd.exe	94
PID 5352 wrote to memory of 4060	5352	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\upgrade.exe
"C:\Users\Admin\AppData\Local\Temp\upgrade.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "upgrade" /tr '"C:\Users\Admin\AppData\Roaming\upgrade.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:764
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "upgrade" /tr '"C:\Users\Admin\AppData\Roaming\upgrade.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5364
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5896.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5352
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2568
- - C:\Users\Admin\AppData\Roaming\upgrade.exe
    "C:\Users\Admin\AppData\Roaming\upgrade.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4060

C:\Users\Admin\AppData\Roaming\upgrade.exe
"C:\Users\Admin\AppData\Roaming\upgrade.exe"
1⤵
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- 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

System Network Configuration Discovery

T1016

Lateral Movement

Collection

Command and Control

Protocol Tunneling

T1572

Exfiltration

Impact

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Downloads

tmp5896.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp5896.tmp.bat
Size 151B
SHA256 8ab238993266ada6d46cd825a7acec70349e27d9651fa8fbd47eaed5973dd213
MD5 da82b22451548654478d1cd0c47dee30
SHA1 f2f494bca09a08dc9a4768746a8e0280e5d83d93
SHA512 29becffcb8b425905830260f32469ddc4726b6799f140423dd52749c2d2dbbb50365a5c58d1537823aea81d6080eb9e9857b36d2c8bd8372e246bfdda642fe52
TLSH
T1C0C08C82A1C5AA0E2805141302BAA99E92B2A89A3E40AB108304409E6280449F0DA242
MD5 SHA1 SHA512 TLSH

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upgrade.exe

Path C:\Users\Admin\AppData\Roaming\upgrade.exe
Size 112KB
SHA256 9a567dd914498730abc22256f066f7db3f16d859febab7f4542c1c5c771d8bb7
MD5 944fcb4dbe6e15ab74c3416715dadc34
SHA1 6a89cbe282af71a8ca40fc11fe94b7b0ccf03643
SHA512 40d0d6df2e3194f3ee20d98b5572cd30be37e6834424fcf0f5dd628318fa14933992aa6b86438c33452b9327c45802767c5305dc86680d28a15f981f2b4c7398
SSDEEP 1536:7uTO9TgQCv2IK0efbDXSctkBSKd6tKrqi35Rwa3:7uTaTg7v2r0efbD/tmFpPwa3
TLSH
T1B8B39F30EFD7B036ED6E0AFC5CA37171492565D3250EF57AFCC0329746226C1A9326A9
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3460-12-0x0000000074FF0000-0x00000000757AC000-memory.dmp

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memory/3460-14-0x0000000074FF0000-0x00000000757AC000-memory.dmp

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memory/4960-0-0x0000000075002000-0x0000000075003000-memory.dmp

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memory/4960-1-0x00000000005C0000-0x00000000005E2000-memory.dmp

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memory/4960-2-0x0000000074FF0000-0x00000000757AC000-memory.dmp

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memory/4960-3-0x0000000004F90000-0x000000000502C000-memory.dmp

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memory/4960-9-0x0000000074FF0000-0x00000000757AC000-memory.dmp

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