asyncrat | 9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc

Analysis

max time kernel
148s
max time network
154s
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, 12:19

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General

Target
9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
Size 45KB
Sample260804-phjw1swwds
SHA256 9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc
MD5 1cfee270bd3868a87dcf0f3d99b20c63
SHA1 f9b64d9b2b119dee6fb1cade059c5a54420dbb71
SHA512 fdf81403bd935d1ff2acecfe60a7cded56a1e7d3f155432253e93335d992a0781240253711a1c0f6371d6d202180c56176ff91dab21ee2f405671bae42303233
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9sZo3TMtPIm9jb0gX3i5Cmw4MAzIb9oLvz3NBDZ8x:0u1YJTHcw2dU3mVbbXSjMMVLPd8x
TLSH
T1AF230A003BE8812BF2BE5F789DF26145867AF6673602D54A1CC441DB1623FC68A42AED
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

fimsexvietnam.com:80
fimsexvietnam.com:22
fimsexvietnam.com:8080
fimsexvietnam.com:8880
fimsexvietnam.com:2052
fimsexvietnam.com:2082
fimsexvietnam.com:2086
fimsexvietnam.com:2095
fimsexvietnam.com:443
fimsexvietnam.com:2053
fimsexvietnam.com:2083
fimsexvietnam.com:2087
fimsexvietnam.com:2096
fimsexvietnam.com:8443
www.fimsexvietnam.com:80
www.fimsexvietnam.com:22
www.fimsexvietnam.com:8080
www.fimsexvietnam.com:8880
www.fimsexvietnam.com:2052
www.fimsexvietnam.com:2082
www.fimsexvietnam.com:2086
www.fimsexvietnam.com:2095
www.fimsexvietnam.com:443
www.fimsexvietnam.com:2053
www.fimsexvietnam.com:2083
www.fimsexvietnam.com:2087
www.fimsexvietnam.com:2096
www.fimsexvietnam.com:8443
zbot.fimsexvietnam.com:80
zbot.fimsexvietnam.com:22
zbot.fimsexvietnam.com:8080
zbot.fimsexvietnam.com:8880
zbot.fimsexvietnam.com:2052
zbot.fimsexvietnam.com:2082
zbot.fimsexvietnam.com:2086
zbot.fimsexvietnam.com:2095
zbot.fimsexvietnam.com:443
zbot.fimsexvietnam.com:2053
zbot.fimsexvietnam.com:2083
zbot.fimsexvietnam.com:2087
zbot.fimsexvietnam.com:2096
zbot.fimsexvietnam.com:8443
ursnif.fimsexvietnam.com:80
ursnif.fimsexvietnam.com:22
ursnif.fimsexvietnam.com:8080
ursnif.fimsexvietnam.com:8880
ursnif.fimsexvietnam.com:2052
ursnif.fimsexvietnam.com:2082
ursnif.fimsexvietnam.com:2086
ursnif.fimsexvietnam.com:2095
ursnif.fimsexvietnam.com:443
ursnif.fimsexvietnam.com:2053
ursnif.fimsexvietnam.com:2083
ursnif.fimsexvietnam.com:2087
ursnif.fimsexvietnam.com:2096
ursnif.fimsexvietnam.com:8443

Mutex

K3gYivnmi9K9

Attributes

delay
0
install
true
install_file
s9hokb.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/0x001000000001c41c-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5912	s9hokb.exe
2712	s9hokb.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	12	104.21.36.7:22
SSH destination	14	172.67.182.173:22

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
2416	cmd.exe
4496	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	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	s9hokb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	s9hokb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
1216	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
3176	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
Token: SeDebugPrivilege	5912	s9hokb.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 4496	1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe	90
PID 1992 wrote to memory of 2416	1992	9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe	92
PID 4496 wrote to memory of 3176	4496	cmd.exe	94
PID 2416 wrote to memory of 1216	2416	cmd.exe	95
PID 2416 wrote to memory of 2712	2416	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe
"C:\Users\Admin\AppData\Local\Temp\9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "s9hokb" /tr '"C:\Users\Admin\AppData\Roaming\s9hokb.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4496
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "s9hokb" /tr '"C:\Users\Admin\AppData\Roaming\s9hokb.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3176
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1A45.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2416
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1216
- - C:\Users\Admin\AppData\Roaming\s9hokb.exe
    "C:\Users\Admin\AppData\Roaming\s9hokb.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2712

C:\Users\Admin\AppData\Roaming\s9hokb.exe
"C:\Users\Admin\AppData\Roaming\s9hokb.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5912

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

tmp1A45.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1A45.tmp.bat
Size 150B
SHA256 33d130302492650991f10d80975c0cebf896e8bdb9d2e454661201eb746a51e6
MD5 4831d13ef7367437e4cb4f5eb56929d7
SHA1 d355b695f9e7699206a6ccb15a1d408e54f4385d
SHA512 1cf3d0e4046bf6d356f0bf52c37d3470de1e671e6fa6871d38bde814058cf19d75c4f9215c99519d1b4ea97eb64e5318b09848e341f011c0b73e287107e8fe5f
TLSH
T191C02B52A3C5FA1E3A09142302FAD48CB5B27D393F40BB14E348440E22804CCF4DD345
MD5 SHA1 SHA512 TLSH

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s9hokb.exe

Path C:\Users\Admin\AppData\Roaming\s9hokb.exe
Size 45KB
SHA256 9de5db0bf11dded338f97d3b8181eca53449777cba0ed61086a6097fdc9e21bc
MD5 1cfee270bd3868a87dcf0f3d99b20c63
SHA1 f9b64d9b2b119dee6fb1cade059c5a54420dbb71
SHA512 fdf81403bd935d1ff2acecfe60a7cded56a1e7d3f155432253e93335d992a0781240253711a1c0f6371d6d202180c56176ff91dab21ee2f405671bae42303233
SSDEEP 768:0u1YJTHwAUgQWUaT2Wmo2q9sZo3TMtPIm9jb0gX3i5Cmw4MAzIb9oLvz3NBDZ8x:0u1YJTHcw2dU3mVbbXSjMMVLPd8x
TLSH
T1AF230A003BE8812BF2BE5F789DF26145867AF6673602D54A1CC441DB1623FC68A42AED
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1992-0-0x0000000074452000-0x0000000074453000-memory.dmp

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memory/1992-1-0x0000000000190000-0x00000000001A2000-memory.dmp

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memory/1992-2-0x0000000074440000-0x0000000074BFC000-memory.dmp

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memory/1992-3-0x0000000004D00000-0x0000000004D9C000-memory.dmp

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memory/1992-8-0x0000000074440000-0x0000000074BFC000-memory.dmp

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memory/5912-12-0x00000000742A0000-0x0000000074A5C000-memory.dmp

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memory/5912-14-0x00000000742A0000-0x0000000074A5C000-memory.dmp

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