asyncrat | caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0

Analysis

max time kernel
148s
max time network
147s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260911-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
19/09/2026, 11:35

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General

Target
caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
Size 45KB
Sample260919-npy4vas19r
SHA256 caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0
MD5 a0035151a206762ffa5ee706968df397
SHA1 84298cba53475d066b976f0925c5aa32244ce885
SHA512 5d2d7f046373d3e39353827caa5cf11cac7eb22171fe233240904adbabfcc7f9d2e84cf3d1a91d41758d641898ccd1217f05589a46400eb27cba1bab0138782c
SSDEEP 768:Au1YJTHwAUgQWUaT2Wmo2q90GFZQjB4PIFfzjbXgX3i9wljMA0vPAkh7BDZQx:Au1YJTHcw2MqF9Ff3bwXS9Ujhs4EdQx
TLSH
T1D5231A003BE9823BF27E5F78A8F26145867AF6733603D9491CC451DB4623FC59A42AED
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

vnsextop1.com:80
vnsextop1.com:22
vnsextop1.com:8080
vnsextop1.com:8880
vnsextop1.com:2052
vnsextop1.com:2082
vnsextop1.com:2086
vnsextop1.com:2095
vnsextop1.com:443
vnsextop1.com:2053
vnsextop1.com:2083
vnsextop1.com:2087
vnsextop1.com:2096
vnsextop1.com:8443
www.vnsextop1.com:80
www.vnsextop1.com:22
www.vnsextop1.com:8080
www.vnsextop1.com:8880
www.vnsextop1.com:2052
www.vnsextop1.com:2082
www.vnsextop1.com:2086
www.vnsextop1.com:2095
www.vnsextop1.com:443
www.vnsextop1.com:2053
www.vnsextop1.com:2083
www.vnsextop1.com:2087
www.vnsextop1.com:2096
www.vnsextop1.com:8443
codered.vnsextop1.com:80
codered.vnsextop1.com:22
codered.vnsextop1.com:8080
codered.vnsextop1.com:8880
codered.vnsextop1.com:2052
codered.vnsextop1.com:2082
codered.vnsextop1.com:2086
codered.vnsextop1.com:2095
codered.vnsextop1.com:443
codered.vnsextop1.com:2053
codered.vnsextop1.com:2083
codered.vnsextop1.com:2087
codered.vnsextop1.com:2096
codered.vnsextop1.com:8443
rat.vnsextop1.com:80
rat.vnsextop1.com:22
rat.vnsextop1.com:8080
rat.vnsextop1.com:8880
rat.vnsextop1.com:2052
rat.vnsextop1.com:2082
rat.vnsextop1.com:2086
rat.vnsextop1.com:2095
rat.vnsextop1.com:443
rat.vnsextop1.com:2053
rat.vnsextop1.com:2083
rat.vnsextop1.com:2087
rat.vnsextop1.com:2096
rat.vnsextop1.com:8443
malware.vnsextop1.com:80
malware.vnsextop1.com:22
malware.vnsextop1.com:8080
malware.vnsextop1.com:8880
malware.vnsextop1.com:2052
malware.vnsextop1.com:2082
malware.vnsextop1.com:2086
malware.vnsextop1.com:2095
malware.vnsextop1.com:443
malware.vnsextop1.com:2053
malware.vnsextop1.com:2083
malware.vnsextop1.com:2087
malware.vnsextop1.com:2096
malware.vnsextop1.com:8443

Mutex

Cmb7mliuM76y

Attributes

delay
0
install
true
install_file
kjo8av.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/0x000f00000001c49d-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3224	kjo8av.exe
2788	kjo8av.exe

Outbound SSH connection to public host 2 TTPs 6 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	pid	Process
SSH destination	7	104.18.31.167:22	3224	kjo8av.exe
SSH destination	9	104.18.30.167:22		Process not Found
SSH destination	10	104.18.31.167:22		Process not Found
SSH destination	12	104.18.30.167:22		Process not Found
SSH destination	14	104.18.31.167:22		Process not Found
SSH destination	15	104.18.30.167:22		Process not Found

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
1660	cmd.exe
5124	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	kjo8av.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.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	kjo8av.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4572	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
1352	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
Token: SeDebugPrivilege	3224	kjo8av.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 1660	1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe	89
PID 1624 wrote to memory of 5124	1624	caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe	90
PID 1660 wrote to memory of 1352	1660	cmd.exe	93
PID 5124 wrote to memory of 4572	5124	cmd.exe	94
PID 5124 wrote to memory of 2788	5124	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe
"C:\Users\Admin\AppData\Local\Temp\caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "kjo8av" /tr '"C:\Users\Admin\AppData\Roaming\kjo8av.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1660
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "kjo8av" /tr '"C:\Users\Admin\AppData\Roaming\kjo8av.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1352
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7853.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5124
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4572
- - C:\Users\Admin\AppData\Roaming\kjo8av.exe
    "C:\Users\Admin\AppData\Roaming\kjo8av.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2788

C:\Users\Admin\AppData\Roaming\kjo8av.exe
"C:\Users\Admin\AppData\Roaming\kjo8av.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3224

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

tmp7853.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp7853.tmp.bat
Size 150B
SHA256 4f936a188aa8e5a885786dc5f8c5c992562b018c361b834a421969c81cc9f60a
MD5 8af711eaed7f505f9c87f14fe10154bd
SHA1 0dbe812554984207ea7d96a3e839b4383cb2c9bf
SHA512 d3fa374a28eab0d4b4ac46eeed4ded030521f8a009a34b349ff81dba9b52b2cf28a3b541e31aad55a8f47bf8272eff42ae1b503c1198e263aa136960dee1a353
TLSH
T168C02B4356C6EA0E2805765302FAD48C9172AC3D3F40BB40C314404D168045FF4D93C1
MD5 SHA1 SHA512 TLSH

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kjo8av.exe

Path C:\Users\Admin\AppData\Roaming\kjo8av.exe
Size 45KB
SHA256 caa28bb8a8b65c8965f330b9ebd1f3895c96264450f5937f8b5fb3d135716ec0
MD5 a0035151a206762ffa5ee706968df397
SHA1 84298cba53475d066b976f0925c5aa32244ce885
SHA512 5d2d7f046373d3e39353827caa5cf11cac7eb22171fe233240904adbabfcc7f9d2e84cf3d1a91d41758d641898ccd1217f05589a46400eb27cba1bab0138782c
SSDEEP 768:Au1YJTHwAUgQWUaT2Wmo2q90GFZQjB4PIFfzjbXgX3i9wljMA0vPAkh7BDZQx:Au1YJTHcw2MqF9Ff3bwXS9Ujhs4EdQx
TLSH
T1D5231A003BE9823BF27E5F78A8F26145867AF6733603D9491CC451DB4623FC59A42AED
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1624-0-0x0000000074DA2000-0x0000000074DA3000-memory.dmp

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memory/1624-1-0x0000000000FC0000-0x0000000000FD2000-memory.dmp

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memory/1624-2-0x0000000074D90000-0x000000007554C000-memory.dmp

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memory/1624-3-0x0000000005B40000-0x0000000005BDC000-memory.dmp

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memory/1624-8-0x0000000074D90000-0x000000007554C000-memory.dmp

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memory/3224-12-0x0000000074C20000-0x00000000753DC000-memory.dmp

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memory/3224-14-0x0000000074C20000-0x00000000753DC000-memory.dmp

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