asyncrat | 19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f

Analysis

max time kernel
6s
max time network
152s
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, 08:46

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General

Target
19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
Size 45KB
Sample260718-kpbf1aet4p
SHA256 19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f
MD5 1822a56cc4de9f2ec3b099b2d9f89784
SHA1 085d7d2fdc7d5bb15a4a7807ff9d28ac494ffc1b
SHA512 d27429ded9fab762aee3dcedc3566d6a805a52150ad36be474a04ebc9c808a8328f1544889dfd6d870a515b69abb4d63af9c8e1d5fd6fa7e0f45819b0c9fdd32
SSDEEP 768:8uuSpTg7GBoWUSH6+mo2qYlCSwTMSPI5YjbFgX3iatz/kgK0nmiWEzqBvsBDZ0x:8uuSpTgyf2dgG5QbCXSaZ/kgKUOBCd0x
TLSH
T10D231A0037E8812BF2BE5F7899F26245867EF5632603D58A2CC441DB5723FC69A426FD
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

sexnga.store:80
sexnga.store:22
sexnga.store:8080
sexnga.store:8880
sexnga.store:2052
sexnga.store:2082
sexnga.store:2086
sexnga.store:2095
sexnga.store:443
sexnga.store:2053
sexnga.store:2083
sexnga.store:2087
sexnga.store:2096
sexnga.store:8443
www.sexnga.store:80
www.sexnga.store:22
www.sexnga.store:8080
www.sexnga.store:8880
www.sexnga.store:2052
www.sexnga.store:2082
www.sexnga.store:2086
www.sexnga.store:2095
www.sexnga.store:443
www.sexnga.store:2053
www.sexnga.store:2083
www.sexnga.store:2087
www.sexnga.store:2096
www.sexnga.store:8443
hermeticwiper.sexnga.store:80
hermeticwiper.sexnga.store:22
hermeticwiper.sexnga.store:8080
hermeticwiper.sexnga.store:8880
hermeticwiper.sexnga.store:2052
hermeticwiper.sexnga.store:2082
hermeticwiper.sexnga.store:2086
hermeticwiper.sexnga.store:2095
hermeticwiper.sexnga.store:443
hermeticwiper.sexnga.store:2053
hermeticwiper.sexnga.store:2083
hermeticwiper.sexnga.store:2087
hermeticwiper.sexnga.store:2096
hermeticwiper.sexnga.store:8443
ursnif.sexnga.store:80
ursnif.sexnga.store:22
ursnif.sexnga.store:8080
ursnif.sexnga.store:8880
ursnif.sexnga.store:2052
ursnif.sexnga.store:2082
ursnif.sexnga.store:2086
ursnif.sexnga.store:2095
ursnif.sexnga.store:443
ursnif.sexnga.store:2053
ursnif.sexnga.store:2083
ursnif.sexnga.store:2087
ursnif.sexnga.store:2096
ursnif.sexnga.store:8443
invasive.sexnga.store:80
invasive.sexnga.store:22
invasive.sexnga.store:8080
invasive.sexnga.store:8880
invasive.sexnga.store:2052
invasive.sexnga.store:2082
invasive.sexnga.store:2086
invasive.sexnga.store:2095
invasive.sexnga.store:443
invasive.sexnga.store:2053
invasive.sexnga.store:2083
invasive.sexnga.store:2087
invasive.sexnga.store:2096
invasive.sexnga.store:8443
ryuk.sexnga.store:80
ryuk.sexnga.store:22
ryuk.sexnga.store:8080
ryuk.sexnga.store:8880
ryuk.sexnga.store:2052
ryuk.sexnga.store:2082
ryuk.sexnga.store:2086
ryuk.sexnga.store:2095
ryuk.sexnga.store:443
ryuk.sexnga.store:2053
ryuk.sexnga.store:2083
ryuk.sexnga.store:2087
ryuk.sexnga.store:2096
ryuk.sexnga.store:8443

Mutex

M8LAwyzR0uUb

Attributes

delay
0
install
true
install_file
0cstj9.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/0x000e00000001c44d-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1380	0cstj9.exe
2392	0cstj9.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
1160	cmd.exe
3088	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	0cstj9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0cstj9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3592	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
2044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2956 wrote to memory of 1160	2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe	89
PID 2956 wrote to memory of 3088	2956	19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe	91
PID 1160 wrote to memory of 2044	1160	cmd.exe	93
PID 3088 wrote to memory of 3592	3088	cmd.exe	94
PID 3088 wrote to memory of 2392	3088	cmd.exe	97

C:\Users\Admin\AppData\Local\Temp\19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe
"C:\Users\Admin\AppData\Local\Temp\19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "0cstj9" /tr '"C:\Users\Admin\AppData\Roaming\0cstj9.exe"' & exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1160
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "0cstj9" /tr '"C:\Users\Admin\AppData\Roaming\0cstj9.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2044
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1D81.tmp.bat""
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3088
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3592
- - C:\Users\Admin\AppData\Roaming\0cstj9.exe
    "C:\Users\Admin\AppData\Roaming\0cstj9.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2392

C:\Users\Admin\AppData\Roaming\0cstj9.exe
"C:\Users\Admin\AppData\Roaming\0cstj9.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1380

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

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Downloads

tmp1D81.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1D81.tmp.bat
Size 150B
SHA256 b1e0ebfc7cc389080db7a9d356be54328baf72b78e24e08a4505c0fed1e72024
MD5 e4b43895a290bbe980ac8a9e0fcf693c
SHA1 9583724e298b36910e3b7045594aad4ca5a6b8e8
SHA512 271cbafcf00d8107dc5afc9d96e4883aa82f6289e20d60caeb367c7cc83b815fc3153ad8d6bbb02eca517207849ddd760fc0432ea50673af57492225d2aacb74
TLSH
T16CC02B9653C9EA0F2A0D249303FAD88D91727C993F40FF20C344400D6380858F0D9742
MD5 SHA1 SHA512 TLSH

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0cstj9.exe

Path C:\Users\Admin\AppData\Roaming\0cstj9.exe
Size 45KB
SHA256 19104478438935be8909d8894001c114b1f6bebd4a1304f9438865b51c92813f
MD5 1822a56cc4de9f2ec3b099b2d9f89784
SHA1 085d7d2fdc7d5bb15a4a7807ff9d28ac494ffc1b
SHA512 d27429ded9fab762aee3dcedc3566d6a805a52150ad36be474a04ebc9c808a8328f1544889dfd6d870a515b69abb4d63af9c8e1d5fd6fa7e0f45819b0c9fdd32
SSDEEP 768:8uuSpTg7GBoWUSH6+mo2qYlCSwTMSPI5YjbFgX3iatz/kgK0nmiWEzqBvsBDZ0x:8uuSpTgyf2dgG5QbCXSaZ/kgKUOBCd0x
TLSH
T10D231A0037E8812BF2BE5F7899F26245867EF5632603D58A2CC441DB5723FC69A426FD
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/1380-12-0x0000000074ED0000-0x000000007568C000-memory.dmp

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memory/1380-14-0x0000000074ED0000-0x000000007568C000-memory.dmp

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memory/2956-0-0x0000000074EE2000-0x0000000074EE3000-memory.dmp

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memory/2956-1-0x0000000000110000-0x0000000000122000-memory.dmp

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memory/2956-2-0x0000000074ED0000-0x000000007568C000-memory.dmp

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memory/2956-3-0x0000000004C70000-0x0000000004D0C000-memory.dmp

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memory/2956-9-0x0000000074ED0000-0x000000007568C000-memory.dmp

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