asyncrat | bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b

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
15/08/2026, 13:02

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General

Target
bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
Size 45KB
Sample260815-p9tkjaga45
SHA256 bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b
MD5 47bbdb2240e18d1aa87426068e47c353
SHA1 f51c4190398fd3498ce69ea0435d409004427339
SHA512 c6497bed792a24bf8c99d5cf99cacba769ae88dca289fc69c2a21d6b2b7d7a04a84bb5439fbac97fe407816515cbd30e704250027b269c4c7508bfc718ed146a
SSDEEP 768:IuI6epTroGtXWU/jmRmo2qTj9YqPq3hOPIezjbygX3ihVghu5sFN+YuV38W7gBDl:IuIjpTrlO2Yaqq3e3b1XSTO7N+b58Y2J
TLSH
T175233A003BE9C12BF2BE5F789DF26105867AF2633603DA491CC451DB5613BC68A526FD
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

e.streamforester.name:80
e.streamforester.name:22
e.streamforester.name:8080
e.streamforester.name:8880
e.streamforester.name:2052
e.streamforester.name:2082
e.streamforester.name:2086
e.streamforester.name:2095
e.streamforester.name:443
e.streamforester.name:2053
e.streamforester.name:2083
e.streamforester.name:2087
e.streamforester.name:2096
e.streamforester.name:8443
www.e.streamforester.name:80
www.e.streamforester.name:22
www.e.streamforester.name:8080
www.e.streamforester.name:8880
www.e.streamforester.name:2052
www.e.streamforester.name:2082
www.e.streamforester.name:2086
www.e.streamforester.name:2095
www.e.streamforester.name:443
www.e.streamforester.name:2053
www.e.streamforester.name:2083
www.e.streamforester.name:2087
www.e.streamforester.name:2096
www.e.streamforester.name:8443
zeus.e.streamforester.name:80
zeus.e.streamforester.name:22
zeus.e.streamforester.name:8080
zeus.e.streamforester.name:8880
zeus.e.streamforester.name:2052
zeus.e.streamforester.name:2082
zeus.e.streamforester.name:2086
zeus.e.streamforester.name:2095
zeus.e.streamforester.name:443
zeus.e.streamforester.name:2053
zeus.e.streamforester.name:2083
zeus.e.streamforester.name:2087
zeus.e.streamforester.name:2096
zeus.e.streamforester.name:8443
formbook.e.streamforester.name:80
formbook.e.streamforester.name:22
formbook.e.streamforester.name:8080
formbook.e.streamforester.name:8880
formbook.e.streamforester.name:2052
formbook.e.streamforester.name:2082
formbook.e.streamforester.name:2086
formbook.e.streamforester.name:2095
formbook.e.streamforester.name:443
formbook.e.streamforester.name:2053
formbook.e.streamforester.name:2083
formbook.e.streamforester.name:2087
formbook.e.streamforester.name:2096
formbook.e.streamforester.name:8443
trickbot.e.streamforester.name:80
trickbot.e.streamforester.name:22
trickbot.e.streamforester.name:8080
trickbot.e.streamforester.name:8880
trickbot.e.streamforester.name:2052
trickbot.e.streamforester.name:2082
trickbot.e.streamforester.name:2086
trickbot.e.streamforester.name:2095
trickbot.e.streamforester.name:443
trickbot.e.streamforester.name:2053
trickbot.e.streamforester.name:2083
trickbot.e.streamforester.name:2087
trickbot.e.streamforester.name:2096
trickbot.e.streamforester.name:8443
klez.e.streamforester.name:80
klez.e.streamforester.name:22
klez.e.streamforester.name:8080
klez.e.streamforester.name:8880
klez.e.streamforester.name:2052
klez.e.streamforester.name:2082
klez.e.streamforester.name:2086
klez.e.streamforester.name:2095
klez.e.streamforester.name:443
klez.e.streamforester.name:2053
klez.e.streamforester.name:2083
klez.e.streamforester.name:2087
klez.e.streamforester.name:2096
klez.e.streamforester.name:8443

Mutex

Mrj6UEtTBx9O

Attributes

delay
0
install
true
install_file
786sw6f.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/0x000a00000001b89b-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3248	786sw6f.exe
6116	786sw6f.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
SSH destination	11	104.26.4.5:22
SSH destination	12	172.67.70.147:22
SSH destination	13	104.26.5.5:22
SSH destination	8	172.67.70.147:22
SSH destination	9	104.26.5.5:22

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
1332	cmd.exe
2752	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	786sw6f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.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	786sw6f.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2556	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
5768	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 1332	1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe	90
PID 1340 wrote to memory of 2752	1340	bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe	92
PID 1332 wrote to memory of 5768	1332	cmd.exe	94
PID 2752 wrote to memory of 2556	2752	cmd.exe	95
PID 2752 wrote to memory of 6116	2752	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe
"C:\Users\Admin\AppData\Local\Temp\bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "786sw6f" /tr '"C:\Users\Admin\AppData\Roaming\786sw6f.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1332
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "786sw6f" /tr '"C:\Users\Admin\AppData\Roaming\786sw6f.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5768
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp92FF.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2556
- - C:\Users\Admin\AppData\Roaming\786sw6f.exe
    "C:\Users\Admin\AppData\Roaming\786sw6f.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:6116

C:\Users\Admin\AppData\Roaming\786sw6f.exe
"C:\Users\Admin\AppData\Roaming\786sw6f.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3248

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

tmp92FF.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp92FF.tmp.bat
Size 151B
SHA256 362477a2976fe875148a9856e7b49c9293c86b9f3d1fd94d5397366812361e92
MD5 7f591b1a094929534e7166abd479f9c9
SHA1 d59917d84cb87fb9afc04a4dd46315ed675c2437
SHA512 04754ce079b6d24f197b1279da0c8c52e8e5c360aee240f38a46b21e949d9d7e89281be3df5a0275f2ec251a5ac379567799df3a4367da76c7385a7c083a58c8
TLSH
T109C02B5391C9FA5E280A542303FAD89EA1776C193F84BF50C304880D32C0448F4E93C1
MD5 SHA1 SHA512 TLSH

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786sw6f.exe

Path C:\Users\Admin\AppData\Roaming\786sw6f.exe
Size 45KB
SHA256 bdef90d97792359925042551a599ee7b51603f537b41e736f1f8aec407d8693b
MD5 47bbdb2240e18d1aa87426068e47c353
SHA1 f51c4190398fd3498ce69ea0435d409004427339
SHA512 c6497bed792a24bf8c99d5cf99cacba769ae88dca289fc69c2a21d6b2b7d7a04a84bb5439fbac97fe407816515cbd30e704250027b269c4c7508bfc718ed146a
SSDEEP 768:IuI6epTroGtXWU/jmRmo2qTj9YqPq3hOPIezjbygX3ihVghu5sFN+YuV38W7gBDl:IuIjpTrlO2Yaqq3e3b1XSTO7N+b58Y2J
TLSH
T175233A003BE9C12BF2BE5F789DF26105867AF2633603DA491CC451DB5613BC68A526FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1340-0-0x0000000074342000-0x0000000074343000-memory.dmp

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memory/1340-1-0x00000000008E0000-0x00000000008F2000-memory.dmp

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memory/1340-2-0x0000000074330000-0x0000000074AEC000-memory.dmp

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memory/1340-3-0x0000000005460000-0x00000000054FC000-memory.dmp

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memory/1340-9-0x0000000074330000-0x0000000074AEC000-memory.dmp

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memory/3248-12-0x0000000074330000-0x0000000074AEC000-memory.dmp

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memory/3248-14-0x0000000074330000-0x0000000074AEC000-memory.dmp

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