asyncrat | 4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77

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
16/07/2026, 14:00

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General

Target
4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
Size 45KB
Sample260716-rayrbaez4p
SHA256 4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77
MD5 503e5b04132daee8fdfd56f0fadc2881
SHA1 743240ff84785d6acfa32a3ca69bb21633de16b7
SHA512 7670f057704b2d8b35347c1440eebd9108822505efecf5c093641888a035630a4bc3ad88d65580ed0656c608c07517ea6f4d3f037bad21b6b77f226281668b06
SSDEEP 768:cuq04JTLcsP8EWUmOTymo2qAO8V1yp7EcPIpzjbOgX3iqU2Zz87AeTXYBDZUx:cuqNJTLr62e8V41Ehp3bxXSqnZiTOdUx
TLSH
T1C2232A003BE9812BF2BE4F78A8F26145867AF6637603D6491CC441DB5713FC59A42AFE
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

vuasexviet.com:80
vuasexviet.com:22
vuasexviet.com:8080
vuasexviet.com:8880
vuasexviet.com:2052
vuasexviet.com:2082
vuasexviet.com:2086
vuasexviet.com:2095
vuasexviet.com:443
vuasexviet.com:2053
vuasexviet.com:2083
vuasexviet.com:2087
vuasexviet.com:2096
vuasexviet.com:8443
www.vuasexviet.com:80
www.vuasexviet.com:22
www.vuasexviet.com:8080
www.vuasexviet.com:8880
www.vuasexviet.com:2052
www.vuasexviet.com:2082
www.vuasexviet.com:2086
www.vuasexviet.com:2095
www.vuasexviet.com:443
www.vuasexviet.com:2053
www.vuasexviet.com:2083
www.vuasexviet.com:2087
www.vuasexviet.com:2096
www.vuasexviet.com:8443
agenttesla.vuasexviet.com:80
agenttesla.vuasexviet.com:22
agenttesla.vuasexviet.com:8080
agenttesla.vuasexviet.com:8880
agenttesla.vuasexviet.com:2052
agenttesla.vuasexviet.com:2082
agenttesla.vuasexviet.com:2086
agenttesla.vuasexviet.com:2095
agenttesla.vuasexviet.com:443
agenttesla.vuasexviet.com:2053
agenttesla.vuasexviet.com:2083
agenttesla.vuasexviet.com:2087
agenttesla.vuasexviet.com:2096
agenttesla.vuasexviet.com:8443
invasive.vuasexviet.com:80
invasive.vuasexviet.com:22
invasive.vuasexviet.com:8080
invasive.vuasexviet.com:8880
invasive.vuasexviet.com:2052
invasive.vuasexviet.com:2082
invasive.vuasexviet.com:2086
invasive.vuasexviet.com:2095
invasive.vuasexviet.com:443
invasive.vuasexviet.com:2053
invasive.vuasexviet.com:2083
invasive.vuasexviet.com:2087
invasive.vuasexviet.com:2096
invasive.vuasexviet.com:8443
malware.vuasexviet.com:80
malware.vuasexviet.com:22
malware.vuasexviet.com:8080
malware.vuasexviet.com:8880
malware.vuasexviet.com:2052
malware.vuasexviet.com:2082
malware.vuasexviet.com:2086
malware.vuasexviet.com:2095
malware.vuasexviet.com:443
malware.vuasexviet.com:2053
malware.vuasexviet.com:2083
malware.vuasexviet.com:2087
malware.vuasexviet.com:2096
malware.vuasexviet.com:8443
hacker.vuasexviet.com:80
hacker.vuasexviet.com:22
hacker.vuasexviet.com:8080
hacker.vuasexviet.com:8880
hacker.vuasexviet.com:2052
hacker.vuasexviet.com:2082
hacker.vuasexviet.com:2086
hacker.vuasexviet.com:2095
hacker.vuasexviet.com:443
hacker.vuasexviet.com:2053
hacker.vuasexviet.com:2083
hacker.vuasexviet.com:2087
hacker.vuasexviet.com:2096
hacker.vuasexviet.com:8443

Mutex

oeeREMbL7PnO

Attributes

delay
0
install
true
install_file
t91x.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/0x000e00000001c4be-10.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5556	t91x.exe
5076	t91x.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	t91x.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	t91x.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3772	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
3468	schtasks.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
Token: SeDebugPrivilege	5556	t91x.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2464 wrote to memory of 4448	2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe	87
PID 2464 wrote to memory of 4084	2464	4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe	89
PID 4084 wrote to memory of 3772	4084	cmd.exe	91
PID 4448 wrote to memory of 3468	4448	cmd.exe	92
PID 4084 wrote to memory of 5076	4084	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe
"C:\Users\Admin\AppData\Local\Temp\4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "t91x" /tr '"C:\Users\Admin\AppData\Roaming\t91x.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4448
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "t91x" /tr '"C:\Users\Admin\AppData\Roaming\t91x.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3468
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC203.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4084
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3772
- - C:\Users\Admin\AppData\Roaming\t91x.exe
    "C:\Users\Admin\AppData\Roaming\t91x.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5076

C:\Users\Admin\AppData\Roaming\t91x.exe
"C:\Users\Admin\AppData\Roaming\t91x.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5556

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

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

tmpC203.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpC203.tmp.bat
Size 148B
SHA256 2bb14bb419104c5e2ad2e2b0731d15fca9fd6b195e3cfa4dce71094d0766be7b
MD5 cfe526e3a6189d1dea0d7e462e3cb52f
SHA1 02084062669a4d3244a37e5d427f262098baece5
SHA512 2bd411540c64737bfda328c3a77a47e30e1a542c6a922d49358b39a95614fad52a1e253b8f4c297c3a151c298754e8f79ce6ec30fe0ef651537acc0521a97756
TLSH
T143C02B5361C6EE5E7905141306FED58DB1726C193F84BB00E309540D5680498F0ED342
MD5 SHA1 SHA512 TLSH

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t91x.exe

Path C:\Users\Admin\AppData\Roaming\t91x.exe
Size 45KB
SHA256 4beb968cc867ad2aba6dbfa6cdca50c04327d8a9bceb4791c8e63b2d58a07e77
MD5 503e5b04132daee8fdfd56f0fadc2881
SHA1 743240ff84785d6acfa32a3ca69bb21633de16b7
SHA512 7670f057704b2d8b35347c1440eebd9108822505efecf5c093641888a035630a4bc3ad88d65580ed0656c608c07517ea6f4d3f037bad21b6b77f226281668b06
SSDEEP 768:cuq04JTLcsP8EWUmOTymo2qAO8V1yp7EcPIpzjbOgX3iqU2Zz87AeTXYBDZUx:cuqNJTLr62e8V41Ehp3bxXSqnZiTOdUx
TLSH
T1C2232A003BE9812BF2BE4F78A8F26145867AF6637603D6491CC441DB5713FC59A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/2464-0-0x0000000074482000-0x0000000074483000-memory.dmp

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memory/2464-1-0x00000000000D0000-0x00000000000E2000-memory.dmp

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memory/2464-2-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/2464-3-0x0000000004B00000-0x0000000004B9C000-memory.dmp

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memory/2464-9-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/5556-12-0x0000000074470000-0x0000000074C2C000-memory.dmp

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memory/5556-14-0x0000000074470000-0x0000000074C2C000-memory.dmp

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