asyncrat | e4bf722f054d8abbb0d923528e5f613c9f2bea4075b70a8294614b3b4ea21d4d

Analysis

max time kernel
148s
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
07/09/2026, 19:44

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
e4bf722f054d8abbb0d923528e5f613c9f2bea4075b70a8294614b3b4ea21d4d.exe
Size 45KB
Sample260907-yf8a9svble
SHA256 e4bf722f054d8abbb0d923528e5f613c9f2bea4075b70a8294614b3b4ea21d4d
MD5 4bdc48dc4c702a1479c76b21cd3259fa
SHA1 070f829026612f842639b1e49e306f373041799e
SHA512 acf2ede633de95bc8a4a82a5f773583581eed1e9d78ca989f8a7f029474983a5ff6b36c2fd6c88d24664303bed2acf8cb69f0f49ad7abcb7a28651268487db09
SSDEEP 768:ku40ZTX3uXTaWUgzW0mo2qwP3Fo9EaOPICzjbTgX3il0TRuua3GHuzBDZMx:ku40ZTXEb258Ea3C3bMXSl0TRxa3wSdO
TLSH
T15F232C003BE8822BF2BE4FB899F26145867AF5736603D5491CC441DB5713BC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

chimchuot.click:80
chimchuot.click:22
chimchuot.click:8080
chimchuot.click:8880
chimchuot.click:2052
chimchuot.click:2082
chimchuot.click:2086
chimchuot.click:2095
chimchuot.click:443
chimchuot.click:2053
chimchuot.click:2083
chimchuot.click:2087
chimchuot.click:2096
chimchuot.click:8443
www.chimchuot.click:80
www.chimchuot.click:22
www.chimchuot.click:8080
www.chimchuot.click:8880
www.chimchuot.click:2052
www.chimchuot.click:2082
www.chimchuot.click:2086
www.chimchuot.click:2095
www.chimchuot.click:443
www.chimchuot.click:2053
www.chimchuot.click:2083
www.chimchuot.click:2087
www.chimchuot.click:2096
www.chimchuot.click:8443
melissa.chimchuot.click:80
melissa.chimchuot.click:22
melissa.chimchuot.click:8080
melissa.chimchuot.click:8880
melissa.chimchuot.click:2052
melissa.chimchuot.click:2082
melissa.chimchuot.click:2086
melissa.chimchuot.click:2095
melissa.chimchuot.click:443
melissa.chimchuot.click:2053
melissa.chimchuot.click:2083
melissa.chimchuot.click:2087
melissa.chimchuot.click:2096
melissa.chimchuot.click:8443
nimda.chimchuot.click:80
nimda.chimchuot.click:22
nimda.chimchuot.click:8080
nimda.chimchuot.click:8880
nimda.chimchuot.click:2052
nimda.chimchuot.click:2082
nimda.chimchuot.click:2086
nimda.chimchuot.click:2095
nimda.chimchuot.click:443
nimda.chimchuot.click:2053
nimda.chimchuot.click:2083
nimda.chimchuot.click:2087
nimda.chimchuot.click:2096
nimda.chimchuot.click:8443
remote.chimchuot.click:80
remote.chimchuot.click:22
remote.chimchuot.click:8080
remote.chimchuot.click:8880
remote.chimchuot.click:2052
remote.chimchuot.click:2082
remote.chimchuot.click:2086
remote.chimchuot.click:2095
remote.chimchuot.click:443
remote.chimchuot.click:2053
remote.chimchuot.click:2083
remote.chimchuot.click:2087
remote.chimchuot.click:2096
remote.chimchuot.click:8443
hacker.chimchuot.click:80
hacker.chimchuot.click:22
hacker.chimchuot.click:8080
hacker.chimchuot.click:8880
hacker.chimchuot.click:2052
hacker.chimchuot.click:2082
hacker.chimchuot.click:2086
hacker.chimchuot.click:2095
hacker.chimchuot.click:443
hacker.chimchuot.click:2053
hacker.chimchuot.click:2083
hacker.chimchuot.click:2087
hacker.chimchuot.click:2096
hacker.chimchuot.click:8443

Mutex

7Of9b48bWBoe

Attributes

delay
0
install
true
install_file
2d4j3.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/0x0004000000016b4e-11.dat	family_asyncrat

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
3260	cmd.exe
4384	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	e4bf722f054d8abbb0d923528e5f613c9f2bea4075b70a8294614b3b4ea21d4d.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3324	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
5840	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\e4bf722f054d8abbb0d923528e5f613c9f2bea4075b70a8294614b3b4ea21d4d.exe
"C:\Users\Admin\AppData\Local\Temp\e4bf722f054d8abbb0d923528e5f613c9f2bea4075b70a8294614b3b4ea21d4d.exe"
1⤵
- System Location Discovery: System Language Discovery
PID:5324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "2d4j3" /tr '"C:\Users\Admin\AppData\Roaming\2d4j3.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  PID:4384
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "2d4j3" /tr '"C:\Users\Admin\AppData\Roaming\2d4j3.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5840
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA2CE.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  PID:3260
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3324
- - C:\Users\Admin\AppData\Roaming\2d4j3.exe
    "C:\Users\Admin\AppData\Roaming\2d4j3.exe"
    3⤵
    PID:2624

C:\Users\Admin\AppData\Roaming\2d4j3.exe
"C:\Users\Admin\AppData\Roaming\2d4j3.exe"
1⤵
PID:3532

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmpA2CE.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpA2CE.tmp.bat
Size 149B
SHA256 1d616f8c16fe0d2104fa4b2edd78ff50b66b9c879cf2d09a64852081d2729230
MD5 af9006133b92c334a9fbc687050e14e9
SHA1 688ddc83d3f2b2cde61557b90736df029756c065
SHA512 6f5bb0f2b30f4a2215e98dde6939c3befa47b06a839a886c21a71ad13af59202d64874bc598e746536e95baa11c2fe9c055e83e5f20cea9bb0944d4e746a0af6
TLSH
T1E0C08C4255C5AA0F280A141306FA988D92A36C293E80AB00834840091280858E0A9245
MD5 SHA1 SHA512 TLSH

Submit Download

2d4j3.exe

Path C:\Users\Admin\AppData\Roaming\2d4j3.exe
Size 45KB
SHA256 e4bf722f054d8abbb0d923528e5f613c9f2bea4075b70a8294614b3b4ea21d4d
MD5 4bdc48dc4c702a1479c76b21cd3259fa
SHA1 070f829026612f842639b1e49e306f373041799e
SHA512 acf2ede633de95bc8a4a82a5f773583581eed1e9d78ca989f8a7f029474983a5ff6b36c2fd6c88d24664303bed2acf8cb69f0f49ad7abcb7a28651268487db09
SSDEEP 768:ku40ZTX3uXTaWUgzW0mo2qwP3Fo9EaOPICzjbTgX3il0TRuua3GHuzBDZMx:ku40ZTXEb258Ea3C3bMXSl0TRxa3wSdO
TLSH
T15F232C003BE8822BF2BE4FB899F26145867AF5736603D5491CC441DB5713BC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3532-12-0x0000000073EA2000-0x0000000073EA3000-memory.dmp

Download

memory/3532-14-0x0000000073EA2000-0x0000000073EA3000-memory.dmp

Download

memory/5324-0-0x0000000074692000-0x0000000074693000-memory.dmp

Download

memory/5324-1-0x0000000000E00000-0x0000000000E12000-memory.dmp

Download

memory/5324-2-0x0000000074680000-0x0000000074E3C000-memory.dmp

Download

memory/5324-3-0x00000000057E0000-0x000000000587C000-memory.dmp

Download

memory/5324-8-0x0000000074680000-0x0000000074E3C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

Replay Monitor

Loading Replay Monitor...

Downloads