asyncrat | 1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b

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
01/08/2026, 18:09

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General

Target
1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
Size 45KB
Sample260801-wrnd5aef83
SHA256 1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b
MD5 78e081fe3705a1fee1f115d5b494271f
SHA1 8195749308c08c429ce356a82fe127c6c7095ab4
SHA512 8b36b1485d2650f5319f9b3e9b7a55739d6cfd67029c5d7fa24c5461db6c0147b9e7f69de6b0709a433f7b61f09db423244b8121d121ba67b5cb76e0cadc61a0
SSDEEP 768:MuLAZTnAkuSWUYzG8mo2qFOeeXKGoibbb6tN8/nPI6DzjbpgX3i/wuA6Ppo64ihl:MuLAZTnbg2aeDqtNKA6D3bmXS/wuTPQE
TLSH
T1DD231A003BE8C12BF2BE4FB86DF26145867AF2636603D64E1CC4519B5613BC6CA426FD
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
sasser.vnsextop1.com:80
sasser.vnsextop1.com:22
sasser.vnsextop1.com:8080
sasser.vnsextop1.com:8880
sasser.vnsextop1.com:2052
sasser.vnsextop1.com:2082
sasser.vnsextop1.com:2086
sasser.vnsextop1.com:2095
sasser.vnsextop1.com:443
sasser.vnsextop1.com:2053
sasser.vnsextop1.com:2083
sasser.vnsextop1.com:2087
sasser.vnsextop1.com:2096
sasser.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
notpetya.vnsextop1.com:80
notpetya.vnsextop1.com:22
notpetya.vnsextop1.com:8080
notpetya.vnsextop1.com:8880
notpetya.vnsextop1.com:2052
notpetya.vnsextop1.com:2082
notpetya.vnsextop1.com:2086
notpetya.vnsextop1.com:2095
notpetya.vnsextop1.com:443
notpetya.vnsextop1.com:2053
notpetya.vnsextop1.com:2083
notpetya.vnsextop1.com:2087
notpetya.vnsextop1.com:2096
notpetya.vnsextop1.com:8443

Mutex

2XDhl2vxvcK3

Attributes

delay
0
install
true
install_file
8qu9x.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
5100	8qu9x.exe
2248	8qu9x.exe

Outbound SSH connection to public host 2 TTPs 1 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	24	185.100.234.69:22

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
3812	cmd.exe
5396	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	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.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	8qu9x.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8qu9x.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2848	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
4108	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
Token: SeDebugPrivilege	5100	8qu9x.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4532 wrote to memory of 3812	4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe	90
PID 4532 wrote to memory of 5396	4532	1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe	91
PID 3812 wrote to memory of 4108	3812	cmd.exe	94
PID 5396 wrote to memory of 2848	5396	cmd.exe	95
PID 5396 wrote to memory of 2248	5396	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe
"C:\Users\Admin\AppData\Local\Temp\1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "8qu9x" /tr '"C:\Users\Admin\AppData\Roaming\8qu9x.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3812
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "8qu9x" /tr '"C:\Users\Admin\AppData\Roaming\8qu9x.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4108
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp6150.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5396
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2848
- - C:\Users\Admin\AppData\Roaming\8qu9x.exe
    "C:\Users\Admin\AppData\Roaming\8qu9x.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2248

C:\Users\Admin\AppData\Roaming\8qu9x.exe
"C:\Users\Admin\AppData\Roaming\8qu9x.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5100

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

tmp6150.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp6150.tmp.bat
Size 149B
SHA256 5171359f9806ba07475df5663e08c2508aa3c7e649c9a4e59242d188284b551c
MD5 f9f5a64af4a00958ea4879ddce05beaf
SHA1 2d4a4428a1e3460f7d44f57ca7bef0a54ed62357
SHA512 9e20cdbe53ed452e3525440109ce5a2c88409a339299cb4c32d0370aa7eb2399ce5745471b6a341c0729e13170eb1f3c8ddefe8504a6e4936d4bc149b64d6aa3
TLSH
T16DC02B92A5C5EE4E2C05586706FBD9CCD1B26D193F40BB40C348401D2280448F0D9345
MD5 SHA1 SHA512 TLSH

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8qu9x.exe

Path C:\Users\Admin\AppData\Roaming\8qu9x.exe
Size 45KB
SHA256 1ef883e415a043c8560bcddf330505d048956c279453bd88d856db4566dbad9b
MD5 78e081fe3705a1fee1f115d5b494271f
SHA1 8195749308c08c429ce356a82fe127c6c7095ab4
SHA512 8b36b1485d2650f5319f9b3e9b7a55739d6cfd67029c5d7fa24c5461db6c0147b9e7f69de6b0709a433f7b61f09db423244b8121d121ba67b5cb76e0cadc61a0
SSDEEP 768:MuLAZTnAkuSWUYzG8mo2qFOeeXKGoibbb6tN8/nPI6DzjbpgX3i/wuA6Ppo64ihl:MuLAZTnbg2aeDqtNKA6D3bmXS/wuTPQE
TLSH
T1DD231A003BE8C12BF2BE4FB86DF26145867AF2636603D64E1CC4519B5613BC6CA426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4532-0-0x0000000075122000-0x0000000075123000-memory.dmp

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memory/4532-1-0x0000000000850000-0x0000000000862000-memory.dmp

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memory/4532-2-0x0000000075110000-0x00000000758CC000-memory.dmp

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memory/4532-3-0x0000000005200000-0x000000000529C000-memory.dmp

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memory/4532-8-0x0000000075110000-0x00000000758CC000-memory.dmp

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memory/5100-12-0x0000000074FA0000-0x000000007575C000-memory.dmp

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memory/5100-14-0x0000000074FA0000-0x000000007575C000-memory.dmp

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