asyncrat | 257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e

Analysis

max time kernel
6s
max time network
151s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
02/08/2026, 17:10

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General

Target
257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
Size 45KB
Sample260802-vpt88adb37
SHA256 257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e
MD5 c5071c197435a18e8a2a106f0b3175db
SHA1 4509bff775de29b67d3fdc727e0201add2495ec4
SHA512 d30c12590beec1e14020034f686a383348349d85299b291a6a383394745f8c0fb467c7aec1521dd559446179231fe6b9f1fb95d9ac3e2f7f1dde18d9a94622d5
SSDEEP 768:RuxkJTVmU5EkWUGMKSmo2q1E+GtCV+JtHuPImzjbCgX3igF8fBH4X7WBDZcx:RuxkJTgip2v+TM3m3blXS2Udcx
TLSH
T1A2232A0037E9812BF2BE4F7898F26145467AF6633603D64D2CC452DB5A23FC68A526FD
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

haysexcdn.net:80
haysexcdn.net:22
haysexcdn.net:8080
haysexcdn.net:8880
haysexcdn.net:2052
haysexcdn.net:2082
haysexcdn.net:2086
haysexcdn.net:2095
haysexcdn.net:443
haysexcdn.net:2053
haysexcdn.net:2083
haysexcdn.net:2087
haysexcdn.net:2096
haysexcdn.net:8443
www.haysexcdn.net:80
www.haysexcdn.net:22
www.haysexcdn.net:8080
www.haysexcdn.net:8880
www.haysexcdn.net:2052
www.haysexcdn.net:2082
www.haysexcdn.net:2086
www.haysexcdn.net:2095
www.haysexcdn.net:443
www.haysexcdn.net:2053
www.haysexcdn.net:2083
www.haysexcdn.net:2087
www.haysexcdn.net:2096
www.haysexcdn.net:8443
malware.haysexcdn.net:80
malware.haysexcdn.net:22
malware.haysexcdn.net:8080
malware.haysexcdn.net:8880
malware.haysexcdn.net:2052
malware.haysexcdn.net:2082
malware.haysexcdn.net:2086
malware.haysexcdn.net:2095
malware.haysexcdn.net:443
malware.haysexcdn.net:2053
malware.haysexcdn.net:2083
malware.haysexcdn.net:2087
malware.haysexcdn.net:2096
malware.haysexcdn.net:8443
formbook.haysexcdn.net:80
formbook.haysexcdn.net:22
formbook.haysexcdn.net:8080
formbook.haysexcdn.net:8880
formbook.haysexcdn.net:2052
formbook.haysexcdn.net:2082
formbook.haysexcdn.net:2086
formbook.haysexcdn.net:2095
formbook.haysexcdn.net:443
formbook.haysexcdn.net:2053
formbook.haysexcdn.net:2083
formbook.haysexcdn.net:2087
formbook.haysexcdn.net:2096
formbook.haysexcdn.net:8443

Mutex

lmnNYbwQY43W

Attributes

delay
0
install
true
install_file
wjckpxeg.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/0x000e00000001c4c9-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4120	wjckpxeg.exe
5000	wjckpxeg.exe

Outbound SSH connection to public host 2 TTPs 3 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	13	104.26.5.211:22
SSH destination	14	104.26.4.211:22
SSH destination	16	172.67.73.19:22

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
1056	cmd.exe
4280	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	wjckpxeg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wjckpxeg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3688	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
2660	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
Token: SeDebugPrivilege	4120	wjckpxeg.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2576 wrote to memory of 1056	2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe	89
PID 2576 wrote to memory of 4280	2576	257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe	91
PID 1056 wrote to memory of 2660	1056	cmd.exe	93
PID 4280 wrote to memory of 3688	4280	cmd.exe	94
PID 4280 wrote to memory of 5000	4280	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe
"C:\Users\Admin\AppData\Local\Temp\257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "wjckpxeg" /tr '"C:\Users\Admin\AppData\Roaming\wjckpxeg.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1056
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "wjckpxeg" /tr '"C:\Users\Admin\AppData\Roaming\wjckpxeg.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2660
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2272.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4280
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3688
- - C:\Users\Admin\AppData\Roaming\wjckpxeg.exe
    "C:\Users\Admin\AppData\Roaming\wjckpxeg.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5000

C:\Users\Admin\AppData\Roaming\wjckpxeg.exe
"C:\Users\Admin\AppData\Roaming\wjckpxeg.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4120

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

tmp2272.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp2272.tmp.bat
Size 152B
SHA256 3621120b2ba4da9dcc9fc5d96b26711863382103ef47ed8c3030b003443c7e6a
MD5 387c552c421eaa946d05e66e69c75fde
SHA1 c348f7de0f8d2b95c3441742999109711a2ba009
SHA512 5b85f9248a11ece3b3d94e4d6643e6cca94a7fc8a01024efd51469346c0f0b00cb32844f15bcf82e0d6d794514f260703eb8cfb56f4b7adaa3cca4d108307e68
TLSH
T156C02B83A1CBFE9E280554531BFED58C9176EC593F80BB20E708400E1280448F0DE381
MD5 SHA1 SHA512 TLSH

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wjckpxeg.exe

Path C:\Users\Admin\AppData\Roaming\wjckpxeg.exe
Size 45KB
SHA256 257d7dc82780f6627142f8e7cd67de5fe59a35be92820ecde54869db767f6a6e
MD5 c5071c197435a18e8a2a106f0b3175db
SHA1 4509bff775de29b67d3fdc727e0201add2495ec4
SHA512 d30c12590beec1e14020034f686a383348349d85299b291a6a383394745f8c0fb467c7aec1521dd559446179231fe6b9f1fb95d9ac3e2f7f1dde18d9a94622d5
SSDEEP 768:RuxkJTVmU5EkWUGMKSmo2q1E+GtCV+JtHuPImzjbCgX3igF8fBH4X7WBDZcx:RuxkJTgip2v+TM3m3blXS2Udcx
TLSH
T1A2232A0037E9812BF2BE4F7898F26145467AF6633603D64D2CC452DB5A23FC68A526FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2576-0-0x0000000075162000-0x0000000075163000-memory.dmp

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memory/2576-1-0x0000000000A80000-0x0000000000A92000-memory.dmp

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memory/2576-2-0x0000000075150000-0x000000007590C000-memory.dmp

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memory/2576-3-0x0000000005450000-0x00000000054EC000-memory.dmp

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memory/2576-9-0x0000000075150000-0x000000007590C000-memory.dmp

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memory/4120-12-0x0000000075150000-0x000000007590C000-memory.dmp

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memory/4120-14-0x0000000075150000-0x000000007590C000-memory.dmp

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