asyncrat | f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b

Analysis

max time kernel
6s
max time network
149s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
18/07/2026, 10:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
Size 45KB
Sample260718-mk8baagv2r
SHA256 f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b
MD5 cadd821e6552a629402b9a7981d425ae
SHA1 183b5fac3c390c3c654c434487d3938b439978eb
SHA512 7ad9181ea129f8c7880c9040eef79ea23a6e36b6aeda0e9fb8f56b2db8e14e7f67214c8d53f6302819e2893acc56eb95cdc29e18877890e35fdd83672cdb782a
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1r9PLziqyvtLjZPIvzjb6gXti7PTbT2pJMB5nBDZUx:cuR0JTPjY229HivVjWv3btXc7PTX23M+
TLSH
T1A3231B003BE9812BF2BE4B78A8F25145867AF6636503E58D1CC441DB5723FC69A426FD
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

zephimsexhay.com:80
zephimsexhay.com:22
zephimsexhay.com:8080
zephimsexhay.com:8880
zephimsexhay.com:2052
zephimsexhay.com:2082
zephimsexhay.com:2086
zephimsexhay.com:2095
zephimsexhay.com:443
zephimsexhay.com:2053
zephimsexhay.com:2083
zephimsexhay.com:2087
zephimsexhay.com:2096
zephimsexhay.com:8443
www.zephimsexhay.com:80
www.zephimsexhay.com:22
www.zephimsexhay.com:8080
www.zephimsexhay.com:8880
www.zephimsexhay.com:2052
www.zephimsexhay.com:2082
www.zephimsexhay.com:2086
www.zephimsexhay.com:2095
www.zephimsexhay.com:443
www.zephimsexhay.com:2053
www.zephimsexhay.com:2083
www.zephimsexhay.com:2087
www.zephimsexhay.com:2096
www.zephimsexhay.com:8443
zeus.zephimsexhay.com:80
zeus.zephimsexhay.com:22
zeus.zephimsexhay.com:8080
zeus.zephimsexhay.com:8880
zeus.zephimsexhay.com:2052
zeus.zephimsexhay.com:2082
zeus.zephimsexhay.com:2086
zeus.zephimsexhay.com:2095
zeus.zephimsexhay.com:443
zeus.zephimsexhay.com:2053
zeus.zephimsexhay.com:2083
zeus.zephimsexhay.com:2087
zeus.zephimsexhay.com:2096
zeus.zephimsexhay.com:8443
downadup.zephimsexhay.com:80
downadup.zephimsexhay.com:22
downadup.zephimsexhay.com:8080
downadup.zephimsexhay.com:8880
downadup.zephimsexhay.com:2052
downadup.zephimsexhay.com:2082
downadup.zephimsexhay.com:2086
downadup.zephimsexhay.com:2095
downadup.zephimsexhay.com:443
downadup.zephimsexhay.com:2053
downadup.zephimsexhay.com:2083
downadup.zephimsexhay.com:2087
downadup.zephimsexhay.com:2096
downadup.zephimsexhay.com:8443

Mutex

GgyKZQBxCIxo

Attributes

delay
0
install
true
install_file
1jwn.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/0x000e00000001c534-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2940	1jwn.exe
3000	1jwn.exe

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
2632	cmd.exe
1932	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	1jwn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1jwn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.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
4664	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
3716	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
Token: SeDebugPrivilege	2940	1jwn.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 124 wrote to memory of 2632	124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe	88
PID 124 wrote to memory of 1932	124	f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe	90
PID 2632 wrote to memory of 3716	2632	cmd.exe	92
PID 1932 wrote to memory of 4664	1932	cmd.exe	93
PID 1932 wrote to memory of 3000	1932	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe
"C:\Users\Admin\AppData\Local\Temp\f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:124
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "1jwn" /tr '"C:\Users\Admin\AppData\Roaming\1jwn.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2632
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "1jwn" /tr '"C:\Users\Admin\AppData\Roaming\1jwn.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3716
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD519.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4664
- - C:\Users\Admin\AppData\Roaming\1jwn.exe
    "C:\Users\Admin\AppData\Roaming\1jwn.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3000

C:\Users\Admin\AppData\Roaming\1jwn.exe
"C:\Users\Admin\AppData\Roaming\1jwn.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2940

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 Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

tmpD519.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpD519.tmp.bat
Size 148B
SHA256 e7758746630dce769404e8cc65aeead5b0d6de417accba2fb7972b29c31132f6
MD5 e8c4b79f0e2dd3dfde12c3108b8a6059
SHA1 cbacda8d9e234bfd6534476c236a0f53fa2fcb0a
SHA512 a51194856f4d28153e1d25880d654d7a5a1ec935905e95756026fbc3424f28b778c06e83e2059da6c1e88155b65c2a7908351e0e7d099bc873f01506e1f9b39f
TLSH
T1A6C02B4251C6EB1E3805146312FAD59C92B37C993F44BF00C304446D22C0C68F8DE381
MD5 SHA1 SHA512 TLSH

Submit Download

1jwn.exe

Path C:\Users\Admin\AppData\Roaming\1jwn.exe
Size 45KB
SHA256 f592659dc4db3fd2afdf2df3b866babedcc6ea31ad1e45c2b756f89eb064aa4b
MD5 cadd821e6552a629402b9a7981d425ae
SHA1 183b5fac3c390c3c654c434487d3938b439978eb
SHA512 7ad9181ea129f8c7880c9040eef79ea23a6e36b6aeda0e9fb8f56b2db8e14e7f67214c8d53f6302819e2893acc56eb95cdc29e18877890e35fdd83672cdb782a
SSDEEP 768:cuR0JTPUYkEWUmjWymo2q1r9PLziqyvtLjZPIvzjb6gXti7PTbT2pJMB5nBDZUx:cuR0JTPjY229HivVjWv3btXc7PTX23M+
TLSH
T1A3231B003BE9812BF2BE4B78A8F25145867AF6636503E58D1CC441DB5723FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/124-0-0x0000000074432000-0x0000000074433000-memory.dmp

Download

memory/124-1-0x0000000000EC0000-0x0000000000ED2000-memory.dmp

Download

memory/124-2-0x0000000074420000-0x0000000074BDC000-memory.dmp

Download

memory/124-3-0x0000000005A40000-0x0000000005ADC000-memory.dmp

Download

memory/124-8-0x0000000074420000-0x0000000074BDC000-memory.dmp

Download

memory/2940-12-0x0000000074230000-0x00000000749EC000-memory.dmp

Download

memory/2940-14-0x0000000074230000-0x00000000749EC000-memory.dmp

Download