asyncrat | 20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726

Analysis

max time kernel
148s
max time network
148s
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, 09:37

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General

Target
20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
Size 45KB
Sample260919-llff8a1y2r
SHA256 20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726
MD5 94c616137c6588507ec5bdfa83486f38
SHA1 35211afebca627f3eeb34191f952c4a2ab8d0ad1
SHA512 d86b0463d6878712c40e1cdf9b27ebdb508810cbf2b5ae79d4d036f6fba936566da6d0a525c3bcc79d3da2e85ccf39e89e6da0037b69479cf20d4c0edb2b1e99
SSDEEP 768:4uBfJTMUyYUWUWBDimo2qVr0R3+Kv18iZPIXzjbIgP3iaIVDUk1OZxcCBDZbx:4uBfJTMpv2t3T6iWX3bfPSFIk1Ixldbx
TLSH
T1E2233B0037E8812BF2BE4F74A9F26245867AF2672603D5891CC451DB5B23FC696436FE
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

sexvl.org:80
sexvl.org:22
sexvl.org:8080
sexvl.org:8880
sexvl.org:2052
sexvl.org:2082
sexvl.org:2086
sexvl.org:2095
sexvl.org:443
sexvl.org:2053
sexvl.org:2083
sexvl.org:2087
sexvl.org:2096
sexvl.org:8443
www.sexvl.org:80
www.sexvl.org:22
www.sexvl.org:8080
www.sexvl.org:8880
www.sexvl.org:2052
www.sexvl.org:2082
www.sexvl.org:2086
www.sexvl.org:2095
www.sexvl.org:443
www.sexvl.org:2053
www.sexvl.org:2083
www.sexvl.org:2087
www.sexvl.org:2096
www.sexvl.org:8443
wannacry.sexvl.org:80
wannacry.sexvl.org:22
wannacry.sexvl.org:8080
wannacry.sexvl.org:8880
wannacry.sexvl.org:2052
wannacry.sexvl.org:2082
wannacry.sexvl.org:2086
wannacry.sexvl.org:2095
wannacry.sexvl.org:443
wannacry.sexvl.org:2053
wannacry.sexvl.org:2083
wannacry.sexvl.org:2087
wannacry.sexvl.org:2096
wannacry.sexvl.org:8443
conficker.sexvl.org:80
conficker.sexvl.org:22
conficker.sexvl.org:8080
conficker.sexvl.org:8880
conficker.sexvl.org:2052
conficker.sexvl.org:2082
conficker.sexvl.org:2086
conficker.sexvl.org:2095
conficker.sexvl.org:443
conficker.sexvl.org:2053
conficker.sexvl.org:2083
conficker.sexvl.org:2087
conficker.sexvl.org:2096
conficker.sexvl.org:8443

Mutex

zQuSjs4BxoBF

Attributes

delay
0
install
true
install_file
o3nl.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/0x0005000000016d01-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
6048	o3nl.exe
2820	o3nl.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	14	104.21.55.34:22
SSH destination	15	172.67.144.105:22
SSH destination	18	172.67.144.105:22
SSH destination	5	104.21.55.34:22
SSH destination	9	172.67.144.105:22

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
5140	cmd.exe
3964	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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	o3nl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	o3nl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4300	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
1520	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
Token: SeDebugPrivilege	6048	o3nl.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1744 wrote to memory of 3964	1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe	89
PID 1744 wrote to memory of 5140	1744	20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe	91
PID 3964 wrote to memory of 1520	3964	cmd.exe	93
PID 5140 wrote to memory of 4300	5140	cmd.exe	94
PID 5140 wrote to memory of 2820	5140	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe
"C:\Users\Admin\AppData\Local\Temp\20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "o3nl" /tr '"C:\Users\Admin\AppData\Roaming\o3nl.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3964
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "o3nl" /tr '"C:\Users\Admin\AppData\Roaming\o3nl.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1520
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2F4.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5140
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4300
- - C:\Users\Admin\AppData\Roaming\o3nl.exe
    "C:\Users\Admin\AppData\Roaming\o3nl.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2820

C:\Users\Admin\AppData\Roaming\o3nl.exe
"C:\Users\Admin\AppData\Roaming\o3nl.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:6048

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

tmp2F4.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp2F4.tmp.bat
Size 147B
SHA256 2e5e34f81f799eb1be134a714613502bbf3a799c051d56aa0674aa2991ccb022
MD5 5aabc19e5ccbd75aeecaaee7bf75798d
SHA1 ad776a1be62298348bab8a00de98331d8417bd4e
SHA512 091454372e944b76faa36e3942e67eb19b9b8cf41e53c851a9f7a38aefeae5bf9aa23066773aac002367ec56d19ec3039015efb32b16eab309af64a56effb5ab
TLSH
T171C02B4271C9EA9F2805141312FAD48D91767C193F40BB00C708404F7280848F0D9342
MD5 SHA1 SHA512 TLSH

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o3nl.exe

Path C:\Users\Admin\AppData\Roaming\o3nl.exe
Size 45KB
SHA256 20b4ba29d6ad6eae05965ec77defb45290dd8be8ceb8a7a024d903cbe37f7726
MD5 94c616137c6588507ec5bdfa83486f38
SHA1 35211afebca627f3eeb34191f952c4a2ab8d0ad1
SHA512 d86b0463d6878712c40e1cdf9b27ebdb508810cbf2b5ae79d4d036f6fba936566da6d0a525c3bcc79d3da2e85ccf39e89e6da0037b69479cf20d4c0edb2b1e99
SSDEEP 768:4uBfJTMUyYUWUWBDimo2qVr0R3+Kv18iZPIXzjbIgP3iaIVDUk1OZxcCBDZbx:4uBfJTMpv2t3T6iWX3bfPSFIk1Ixldbx
TLSH
T1E2233B0037E8812BF2BE4F74A9F26245867AF2672603D5891CC451DB5B23FC696436FE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1744-0-0x00000000747C2000-0x00000000747C3000-memory.dmp

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memory/1744-1-0x0000000000B70000-0x0000000000B82000-memory.dmp

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memory/1744-2-0x00000000747B0000-0x0000000074F6C000-memory.dmp

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memory/1744-3-0x00000000056E0000-0x000000000577C000-memory.dmp

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memory/1744-8-0x00000000747B0000-0x0000000074F6C000-memory.dmp

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memory/6048-12-0x0000000074740000-0x0000000074EFC000-memory.dmp

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memory/6048-14-0x0000000074740000-0x0000000074EFC000-memory.dmp

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