asyncrat | 6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af

Analysis

max time kernel
148s
max time network
148s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/08/2026, 07:47

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General

Target
6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
Size 45KB
Sample260831-jms3laxepd
SHA256 6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af
MD5 2b189c0930cf289d503eb290cfa235b2
SHA1 acdd452ea23215be6fe26ca0aef7e394b19de169
SHA512 1c8d1aaa52431b26a273e3a480c03749f24fbe5e1062a3fc0912f6a9961bf756a67d7f8cc5e3e176e1e213c44af265ff9f75e8295188e202a407838957577305
SSDEEP 768:EufspTfzcR6uWUcb+wmo2q9oozHyvCKPIiCjbTgX3iGXeZx4w/KKtcZRF46BDZsx:EufspTf2g20L5iObMXSGOV6Pbdsx
TLSH
T198231C003BE9C12BF2BE5B789DF26245867AF5733A03D54A1CC4119B5613FC68A426FE
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

zorvec.name:80
zorvec.name:22
zorvec.name:8080
zorvec.name:8880
zorvec.name:2052
zorvec.name:2082
zorvec.name:2086
zorvec.name:2095
zorvec.name:443
zorvec.name:2053
zorvec.name:2083
zorvec.name:2087
zorvec.name:2096
zorvec.name:8443
www.zorvec.name:80
www.zorvec.name:22
www.zorvec.name:8080
www.zorvec.name:8880
www.zorvec.name:2052
www.zorvec.name:2082
www.zorvec.name:2086
www.zorvec.name:2095
www.zorvec.name:443
www.zorvec.name:2053
www.zorvec.name:2083
www.zorvec.name:2087
www.zorvec.name:2096
www.zorvec.name:8443
qbot.zorvec.name:80
qbot.zorvec.name:22
qbot.zorvec.name:8080
qbot.zorvec.name:8880
qbot.zorvec.name:2052
qbot.zorvec.name:2082
qbot.zorvec.name:2086
qbot.zorvec.name:2095
qbot.zorvec.name:443
qbot.zorvec.name:2053
qbot.zorvec.name:2083
qbot.zorvec.name:2087
qbot.zorvec.name:2096
qbot.zorvec.name:8443
mydoom.zorvec.name:80
mydoom.zorvec.name:22
mydoom.zorvec.name:8080
mydoom.zorvec.name:8880
mydoom.zorvec.name:2052
mydoom.zorvec.name:2082
mydoom.zorvec.name:2086
mydoom.zorvec.name:2095
mydoom.zorvec.name:443
mydoom.zorvec.name:2053
mydoom.zorvec.name:2083
mydoom.zorvec.name:2087
mydoom.zorvec.name:2096
mydoom.zorvec.name:8443
malware.zorvec.name:80
malware.zorvec.name:22
malware.zorvec.name:8080
malware.zorvec.name:8880
malware.zorvec.name:2052
malware.zorvec.name:2082
malware.zorvec.name:2086
malware.zorvec.name:2095
malware.zorvec.name:443
malware.zorvec.name:2053
malware.zorvec.name:2083
malware.zorvec.name:2087
malware.zorvec.name:2096
malware.zorvec.name:8443
codered.zorvec.name:80
codered.zorvec.name:22
codered.zorvec.name:8080
codered.zorvec.name:8880
codered.zorvec.name:2052
codered.zorvec.name:2082
codered.zorvec.name:2086
codered.zorvec.name:2095
codered.zorvec.name:443
codered.zorvec.name:2053
codered.zorvec.name:2083
codered.zorvec.name:2087
codered.zorvec.name:2096
codered.zorvec.name:8443

Mutex

Du7yUwCTYFG7

Attributes

delay
0
install
true
install_file
3knyn1a.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/0x000e00000001c51f-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4400	3knyn1a.exe
360	3knyn1a.exe

Outbound SSH connection to public host 2 TTPs 4 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	104.21.28.44:22	4400	3knyn1a.exe
SSH destination	9	172.67.144.58:22		Process not Found
SSH destination	11	104.21.28.44:22		Process not Found
SSH destination	13	172.67.144.58:22		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
4736	cmd.exe
6048	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3knyn1a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3knyn1a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4192	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
2920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
Token: SeDebugPrivilege	4400	3knyn1a.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 5204 wrote to memory of 4736	5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe	90
PID 5204 wrote to memory of 6048	5204	6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe	91
PID 4736 wrote to memory of 2920	4736	cmd.exe	94
PID 6048 wrote to memory of 4192	6048	cmd.exe	95
PID 6048 wrote to memory of 360	6048	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe
"C:\Users\Admin\AppData\Local\Temp\6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "3knyn1a" /tr '"C:\Users\Admin\AppData\Roaming\3knyn1a.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4736
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "3knyn1a" /tr '"C:\Users\Admin\AppData\Roaming\3knyn1a.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp617F.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:6048
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4192
- - C:\Users\Admin\AppData\Roaming\3knyn1a.exe
    "C:\Users\Admin\AppData\Roaming\3knyn1a.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:360

C:\Users\Admin\AppData\Roaming\3knyn1a.exe
"C:\Users\Admin\AppData\Roaming\3knyn1a.exe"
1⤵
- Executes dropped EXE
- Outbound SSH connection to public host
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4400

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

tmp617F.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp617F.tmp.bat
Size 151B
SHA256 14d486ada2774c56104f2314a71e2e7ff78f137c805141bee41acbf96b5a76e4
MD5 1e91029dad2ed8e29588d2ba88751a9a
SHA1 85af20a532bafeffc45a73426880dfe12a18a8f0
SHA512 1d09950c50b27617d14d4cece9ce0a521201cb8d94290f64235f021566018bb43a6b1b89b03662ff5e6c2cd314bdebff6c57da0346ad38991cbea20ae254a05d
TLSH
T16DC08C62A5C5FA4E6809541312BA999C9162685A3E80AB4083084089128089CE09E341
MD5 SHA1 SHA512 TLSH

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3knyn1a.exe

Path C:\Users\Admin\AppData\Roaming\3knyn1a.exe
Size 45KB
SHA256 6b52256ecec59b908dff0a0a3645f6aeb3b98158b8cbb39e73f46cf3f15ad9af
MD5 2b189c0930cf289d503eb290cfa235b2
SHA1 acdd452ea23215be6fe26ca0aef7e394b19de169
SHA512 1c8d1aaa52431b26a273e3a480c03749f24fbe5e1062a3fc0912f6a9961bf756a67d7f8cc5e3e176e1e213c44af265ff9f75e8295188e202a407838957577305
SSDEEP 768:EufspTfzcR6uWUcb+wmo2q9oozHyvCKPIiCjbTgX3iGXeZx4w/KKtcZRF46BDZsx:EufspTf2g20L5iObMXSGOV6Pbdsx
TLSH
T198231C003BE9C12BF2BE5B789DF26245867AF5733A03D54A1CC4119B5613FC68A426FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4400-12-0x0000000074FA0000-0x000000007575C000-memory.dmp

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memory/4400-14-0x0000000074FA0000-0x000000007575C000-memory.dmp

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memory/5204-0-0x0000000075122000-0x0000000075123000-memory.dmp

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memory/5204-1-0x0000000000E10000-0x0000000000E22000-memory.dmp

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memory/5204-2-0x0000000075110000-0x00000000758CC000-memory.dmp

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memory/5204-3-0x00000000058B0000-0x000000000594C000-memory.dmp

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memory/5204-8-0x0000000075110000-0x00000000758CC000-memory.dmp

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